A light string is wrapped around the rim of a small hoop If you were to hold the free end of the string and the hoop is released from the rest, it will unwind, and the hoop descends. What forces are causing a torque on the hoop?   A) More than one is correct B) the weight C) the friction D) the tension E) the normal force

Physics for Scientists and Engineers, Technology Update (No access codes included)
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Author:Raymond A. Serway, John W. Jewett
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Chapter12: Static Equilibrium And Elasticity
Section: Chapter Questions
Problem 12.3CQ: (a) Give an example in which the net force acting on an object is zero and yet the net torque is...
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A light string is wrapped around the rim of a small hoop

If you were to hold the free end of the string and the hoop is released from the rest, it will unwind, and the hoop descends. What forces are causing a torque on the hoop?

 

A) More than one is correct

B) the weight

C) the friction

D) the tension

E) the normal force

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