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.

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.

Name: Bob and Anna sit on opposite ends of a uniformsee-saw which is 12.0 m
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Description: Bob and Anna sit on opposite ends of a uniformsee-saw which is 12.0 m in length. The see-sawis balanced by a fulcrum which is located 4.00 mfrom Bob.Bob has a mass of 85.0 kg, and the see-saw itselfhas a mass of 100 kg. Anna’s mass is unknown.NOTE TH

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...

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Topic Video

Question

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!!!

What is the

net torque

on the see-saw?

Explain clearly and briefly how you know.

Draw a properly labeled extended force diagram of the see-saw

Solve for Anna’s mass.

Show your work clearly!

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