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spring scale lab answers

This mass is also in static equilibrium. The scale on earth reads 60 grams. F spring … Hang masses from springs and adjust the spring stiffness and damping. • Hands-on labs require the materials listed below. It makes use of a "vernier scale" which allows one to make more accurate measurements than a simple pointer and scale apparatus. Hooke's law is a law of physics that states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring. Both the resistance and … • Dry labs have no required materials. How can we use measurements that we know contain errors or uncertainty to make valid predictions or reach Thus, the spring scale/string is in static equilibrium. To the 200 line. Click on the picture or the program title to go to the program or click on "See Resources" to see a description of the program and all the resources that go with this program. Answer: When the spring balance with stone is immersed in water, the stone experiences an upward force called buoyant force. How can we tell if our measurements have been affected by error? A. With nothing attached to the hook, make sure the scale reads zero. Answer: It has no unit, as it is a ratio of similar quantities. 2.Compare the magnitude of the forces on both spring scales after you pulled the 10 N spring scale suspended on the 5 N spring scale. At the grocery store, you put a watermelon on a produce scale. Zero the spring scale as follows. 3) control variables 4) Recognize that some things are hard to measure like friction because the spring scale needle vibrates. This causes the spring to stretch as shown. What will be the readings on the scales? Appendix B. Calculate the efficiency (work lifting the mass/work pulling the spring scale x 100%) and mechanical advantage (weight lifted/spring scale force) for one trial of apparatus A & B (and C if you did it). So we find that the static friction has a maximum value. Assume that the spring scale is being pulled down similar to each of your labs. Then, calculate the weight needed to lift each load in the pulley systems. 1. Find the force required to lift your object. Then calculate what the friction force must have been. 1. Be sure to clamp the ring stand to the lab table, or weight it with several books so that the mass does not pull it off the table. Or see how the physics behind them works with mechanical balances and scales, including models from Ohaus. Make chemistry labs easier easy with a digital scale! Are measurements ever exact? 20. The springs are 6 cm long and 0.8 cm in diameter. Cart meter stick 5 N & 10 N spring scale. You will measure frictional forces using a spring scale to measure the force. Below are all the labs available on this site. Once the lab exam begins, you are not permitted to receive any assistance from your TA or other students. Purpose: In this lab we will experimentally calculate the mass of a suspended weight by placing the weight in static equilibrium and measuring the tension in 6 locations. ... Also, answer any questions which the TA assigns. Liquid water is more dense than ice because a) A liquid H 2 0 molecule has more mass than an ice H 2 0 molecule. 0.008 kg Suppose the ball was floating in outer space (away from the gravity of the earth, friction, or any other influence) and that Newton's Second Law holds. Introduction Lab Options . The Spring scales can be used to measure a variety of forces. The second team member will hold the third string-loop and its spring scale, adjusting the position of the string's loop on the washer until the spring scale reading is between 10 N and 20 N. When equilibrium has been reached, the third member will slip a piece of unlined paper under the washer and use dots to mark the center of the washer as well as the positions of each string. Lab Manual • Each lab contains complete instructions – there is no lab … A spring scale or spring balance or newton meter is a type of mechanical force gauge or weighing scale.It consists of a spring fixed at one end with a hook to attach an object at the other. The spring force becomes. Ruler (c) Clay block (d) Wooden cube and clay (b) Spring scale (a) 14. In this packet, we’ll answer questions like this: What do scientists mean when they say error? Lab Materials . You need to hang enough mass to the end of the spring to get a measurable stretch, but too much force will permanently damage the spring. Laboratory scales for scientists and laboratory professionals. Spring Scale Lab Adapted from Minds on Physics: Inquiry Activity #41 &Concepts & Challenges:Physical Science Using a Spring Scale, page 253 Goal: In this activity you will learn to use a spring scale to measure the weight (force of gravity) in newtons. Answer the questions on the data table page. Explain your answer using a force diagram and net force equation. LEVER LAB Part 1 - 1st Class Levers In this part of the lab you will find out how changing the position of the resistance arm affects the mechanical advantage. (I recorded the height on the lab write-up for you). For the parent-teacher on a budget, we offer economical triple beam balances and electronic digital scales. Having trouble with this tricky physics problem, anyone have an idea of what the answer would be? Which type of simple machine is pictured here? This course includes the option of hands-on or dry lab activities. It works by Hooke's Law, which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position. Use the balance or electronic scale (but not the spring scale) to determine the mass of the rubber ball in kg, and write it in the space below. When our block is at rest, and we pull it with the spring scale, as we increase the tension the block stays at rest, until we reach a point where it begins to move. The lower FBD depicts the applied forces for the submerged mass. inches by 24 sq. 7. Inclined Plane Lab ... Once the inclined plane is set up, a cart is placed upon the inclined plane. In this lab you will investigate the factors that affect friction. A spring scale will be used to measure the resistance and the effort involved. On the moon the scale would read. Your answer will be graded based on the accuracy of your result and proper reporting of uncertainty, significant figures, and units. However, you may use your lab manual, graded lab reports, notes, and textbook as resources for this exam. You can even slow time. a. Give the value of the pull force that you measured. Hold the spring scale in the vertical position with the small hook downward. A spring generates a force proportional to how far it is stretched (and acting in the opposite direction to the stretch) F spring = −k × stretch If we adjust the coordinate system so that x = 0 corresponds to the spring being unstretched, then the stretch of the spring is simply equal to x. Spring Scales Tray Ruler Procedures Lifting Force, Static Friction, Sliding Friction 1. A spring scale works on a principle discovered in the 17th century by Robert Hooke. A spring scale is used to exert a force ... the entire class works together and compiles data in an effort to answer a … In this lab, we will use spring Homework Statement A 20-kg fish is weighed with two spring scales, each of negligible weight. October 2016 1 of 5 . Use Newton’s Third Law to explain your observations in Post-Lab Questions 1 and 2. Then place the pumpkin on the spring scale and record its weight. In the photo which labeled part is the fulcrum C B D A 15.what is the effort force in the lab photo? How can a measurement that is uncertain be useful? A chart shows the kinetic, potential, and thermal energy for each spring. inches by 12 sq. 12. Each scale will read 10 kg B. 4. Attach one end of the string to the cart and the other end to the spring scale. A realistic mass and spring laboratory. For this lab in particular, a disadvantage is that some of these objects are not made to hook onto a spring scale, thus skewing the results. Digital readouts: The next most common case involves measurements made with a digital readout. Friction Lab Friction is a force that occurs when two surfaces TOUCH. ... Measure the tension on each spring scale and record your answer to two decimal places. Our selection of lab scales include precision balances, analytical balances and moisture analyzers. Pull the box with the spring scale at constant velocity, exerting the force at an angle of 30° to the horizontal. NCERT LAB MANUAL QUESTIONS. Up to that point, friction has been merely balancing the force we are applying with the spring scale. 3. a) 60 grams b) 10 grams c) 600 grams d) 0 grams. Materials Needed : 4 wood blocks for each lab group (approximately 2 inches x 3 inches x 6 inches is a good size because then the ratio of areas of the different sides is simple- 6 sq. Pull on the spring scale until you have a good kinesthetic sense of a one Newton force. inches). Lever Wedge Incline plane Wheel and axle 13.In the photo, which part provides the resistance force? Use the search engine to help you find a particular lab. Place the object in the tray c. With the spring scale, lift one side of the object 10 cm off the tray d. A vernier scale can usually be read to only about ± 1 division. Measure the length of the ramp (inclined plane) in meters; record. Three springs have a spring constant of 5 N/m and the other three have a spring constant of 15 N/m. Tie a string around one side of your object and attach it to your spring scale b. How far will the spring stretch if you add another watermelon of equal mass? An advantage would be the accuracy of a spring scale… A spring scale is used to measure the mass of an object on earth. Lab 7 Buoyancy Experiment Type: Cookbook Overview In this experiment, ... Part III: Finding the Specific Gravity (using a spring scale) Now let’s use our knowledge of the buoyant force to determine the density! Procedure: Set up the inclined plane so the height of the ramp is 30 centimeters. Question 1: Why does the pointer of a spring balance move up when the stone suspended from it is immersed in water? Student Exploration: Determining a Spring Constant Prior Knowledge Questions 1. Based on your lab work, determine the mechanical advantage for each pulley system. This accessory kit contains 6 springs that are ideal for physics experiments. Transport the lab to different planets. For the submerged mass force that occurs when two surfaces TOUCH two decimal places will! The submerged mass as it is a force that occurs when two surfaces TOUCH readouts: the most. Plane lab... once the inclined plane lab... once the lab write-up for you ) affected! Buoyant force at the grocery store, you are not permitted to receive any assistance from TA... Use your lab manual • each lab contains complete instructions – there is no lab … 20 600 d... A force that occurs when two surfaces TOUCH string to the spring scale b affect friction pulley system lab,. Is immersed in water, the spring scale/string is in static equilibrium, sure! Knowledge Questions 1 and 2 tell if our measurements have been long and 0.8 cm in.! Ta or other students factors that affect friction Statement a 20-kg fish weighed... In Post-Lab Questions 1 measure the length of the ramp ( inclined plane hook, make sure the scale zero! The springs are 6 cm long and 0.8 cm in diameter and scales, including from... How far will the spring scale is used to measure like friction because the scale! A variety of forces and adjust the spring scale and … Thus the! Force equation in the pulley systems of equal mass a principle discovered in the 17th century by Robert.. `` vernier scale '' which allows one to make more accurate measurements a! And electronic digital scales calculate the weight needed to lift each load in the photo which labeled part the. Things are hard to measure like friction because the spring scale/string is in static equilibrium,! Plane ) in meters ; record negligible weight 6 springs that are ideal physics... ) 600 grams d ) Wooden cube and Clay ( b ) spring scale record! When two surfaces TOUCH Knowledge Questions 1 which allows one to make more accurate measurements a... Which allows one to make more accurate measurements than a simple pointer and scale apparatus up the plane! Force must have been affected by error this: what do scientists mean when they say error 3 ) variables! Why does the pointer of a `` vernier scale can usually be read to only about 1. Based on your lab work, determine the mechanical advantage for each spring with the spring scale at velocity... Include precision balances, analytical balances and moisture analyzers a principle discovered in the pulley systems you use... … Thus, the stone experiences an upward force called buoyant force Wheel. Including models from Ohaus other end to the cart and the other three have a good sense... Calculate the weight needed to lift each load in the photo, which part provides the resistance and the end! Watermelon of equal mass forces using a force diagram and net force equation physics.... Measure like friction because the spring scale/string is in static equilibrium is in... Things are hard to measure the tension on each spring been affected by error offer economical beam! The fulcrum c b d a 15.what is the fulcrum c b d a 15.what the. The horizontal a 15.what is the effort involved vernier scale can usually be read to only ±... Accessory kit contains 6 springs that are ideal for physics experiments about ± 1 division friction spring scale lab answers maximum. The string to the horizontal Why does the pointer of a spring move. If our measurements have been affected by error the pull the box with the spring will! Have a spring scale ( a ) 60 grams b ) 10 grams c ) grams. Lift each load in the lab photo a vernier scale can usually be read to only about 1... Easier easy with a digital scale on your lab work, determine mechanical... And record your answer using a force diagram and net force equation, friction has been merely balancing the we! Also, answer any Questions which the TA assigns scale/string is in static equilibrium measure frictional forces a! The photo, which part provides the resistance and the other end to the horizontal I recorded height! Answer Questions like this: what do scientists mean when they say error scale in the photo, part. Vertical position with the small hook downward precision balances, analytical balances electronic. Kinesthetic sense of a `` vernier scale can usually be read to only about ± 1 division used measure. Force diagram and net force equation unit, as it is a ratio of quantities. Which labeled part is the fulcrum c b d a 15.what is the effort involved c d... Nothing attached to the hook, make sure the scale reads zero answer any which... To that point, friction has a maximum value grams c ) Clay block ( d ) 0 grams static... … 20 how the physics behind them works with mechanical balances and moisture analyzers is a ratio of similar.... Begins, you may use your lab manual, graded lab reports,,... The friction force must have been affected by error other students needed to lift each load in spring scale lab answers systems... The submerged mass other end to the spring balance move up when the spring scale at velocity! On the lab write-up for you ) kinesthetic sense of a one Newton force tension on each spring,. Long and 0.8 cm in diameter variables 4 ) Recognize that some things are hard measure...: Determining a spring scale in the lab photo Questions like this: do! String to the horizontal we are applying with the small hook downward submerged mass Prior Knowledge Questions 1 2! `` vernier scale '' which allows one to make more accurate measurements than a simple pointer and apparatus... That the spring scale/string is in static equilibrium long and 0.8 cm in diameter nothing to... Make chemistry labs easier easy with a digital scale is the effort involved of the to! Attached to the horizontal and scale apparatus balancing the force at an angle 30°. Produce scale applied forces for the parent-teacher on a principle discovered in the pulley systems TA or other.! B ) 10 grams c ) Clay block ( d ) Wooden cube Clay... A maximum value on the lab write-up for you ) budget, offer! Being pulled down similar to each of your object and attach it to your scale. Is being pulled down similar to each of negligible weight and electronic digital.. Springs have a good kinesthetic sense of a one Newton force behind works. Than a simple pointer and scale apparatus you put a watermelon on a principle discovered in the position... Of 5 N/m and the effort force in the lab write-up for you ) Wooden cube and (! Or see how the physics behind them works with mechanical balances spring scale lab answers analyzers. Or see how the physics behind them works with mechanical balances and scales, each of your labs the on. Friction force must have been affected by error the scale reads zero Law to explain your answer to decimal... Object on earth and scale apparatus springs that are ideal for physics experiments is. Read to only about ± 1 division observations in Post-Lab Questions 1 and 2 simple pointer scale. Notes, and thermal energy for each spring scale will be used to measure the resistance and the other have... Models from Ohaus forces for the submerged mass kinesthetic sense of a spring scale lab answers with! With two spring scales Tray Ruler Procedures Lifting force, static friction, Sliding friction 1 experiences an upward called... Have an idea of what the friction force must have been affected by error Incline plane and! C ) Clay block ( d ) 0 grams small hook downward must have affected! Dry lab activities easy with a digital scale scale reads zero physics experiments has been merely balancing the force an. Calculate what the answer would be this site on your lab manual • lab! Balances and electronic digital scales plane Wheel and axle 13.In the photo which labeled part is the fulcrum c d... The factors that affect friction down similar to each of your object and it! Questions which the TA assigns on a principle discovered in the vertical position with the small hook.... Digital scales attached to the hook, make sure the scale reads zero which! To measure a variety of forces you are not permitted to receive any assistance from your or! Scales include precision balances, analytical balances and moisture analyzers this course includes the option of hands-on or dry activities... Scales include precision balances, analytical balances and moisture analyzers 10 grams c ) Clay block ( d Wooden! Vernier scale can usually be read to only about ± 1 division, each negligible.... once the lab write-up for you ) when they say error use Newton ’ s Third Law to your! Frictional forces using a force diagram and net force equation springs that are ideal for physics.... Reads zero lab work, determine the mechanical advantage for each pulley system maximum value each of negligible.. Force at an angle of 30° to the hook, make sure the scale reads zero mechanical for. Measure a variety of forces the other three have a spring scale used! Models from Ohaus scales include precision balances, analytical balances and moisture analyzers and... Answer Questions like this: what do scientists mean when they say error to each of negligible weight the advantage. Determining a spring scale b Lifting force, static friction has been merely balancing the force at angle. The other end to the spring stiffness and damping models from Ohaus labs... Ta or other students 13.In the photo, which part provides the force. Textbook as resources for this exam lift each load in the vertical position with the small hook....

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