6. Record the mass taken by each of these triple beam balances shown below. Use the correct number of significant digits. The unit is grams. 10 20 30 40 50 60 70 80 90 00 100 200 300 400 500 600 700 800 900 S000 2 4 7 10 a. 10 20 30 40 50 60 70 80 90 100 100 200 200 400 500 600 700 800 400 1000 3. 4. 5. 6. 8. 10 83

A 2.0-m-long rod has a density in kilograms per meter A = a + bx ,where a = 1.0 kg/m, b = 1.0 k9/m², and x is the distance from the left end of the rod. The rod rests horizontally with each end supported by a scale. The force exerted by the left scales is 39.2 N 22.9 N 16.3 N 4.0 N 32.6 N

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A. Find the required F to achieve Net Torque = 0. Assume b = 2a. B. After a design modification, all forces including F stay the same. If new design is basedon b = 1.5a, what will be the net torque after modifications?

The maximum force in each rod can not exceed 1540 N Figure 1m 14 12 m 3 m 2m 1m 2m O 2 m 3m Part A Determine the greatest mass of the crate that can be supported. (Figure 1) Express your answer to three significant figures and include the appropriate units. Wmar = Submit HA Value < Return to Assignment 4 Request Answer ✔ Units Provide Feedback wwww ? D

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The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is at the 50 cm 10 20 30 40 50 60 70 80 90 mark. There is a 20.0 N block hanging from the 80 cm mark. Decide where each of the other blocks should be placed, one at a time, to balance out the 20.0 N block. 3 2 1 At what mark on the meter stick would you place a 19.0 N block to balance the 20.0 N block? mark: cm At what mark on the meter stick would you place a 42.0 N block to balance the 20.0 N block? mark: cm about us careers privacy policy terms of use contact us help -8

Bob and Anna sit on opposite ends of a uniform see-saw which is 12.0 m in length. The see-saw is balanced by a fulcrum which is located 4.00 m from Bob. Bob has a mass of 85.0 kg, and the see-saw itself has a mass of 100 kg. Anna’s mass is unknown. NOTE THAT THE FULCRUM IS NOT PLACED AT THE CENTER OF MASS OF THE SEE- SAW!!! a)   What is the net torque on the see-saw? Explain clearly and briefly how you know. b) Draw a properly labeled extended force diagram of the see-saw   c) Solve for Anna’s mass. Show your work clearly!

Bob and Anna sit on opposite ends of a uniform see-saw which is 12.0 m in length. The see-saw is balanced by a fulcrum which is located 4.00 m from Bob. Bob has a mass of 85.0 kg, and the see-saw itself has a mass of 100 kg. Anna’s mass is unknown. NOTE THAT THE FULCRUM IS NOT PLACED AT THE CENTER OF MASS OF THE SEESAW!!!   a) What is the net torque on the see-saw? Explain clearly and briefly how you know.   b) Draw a properly labeled extended force diagram of the see-saw.   c) Solve for Anna’s mass.