What determines the net work on a hockey puck in circular motion?

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SUMMARY

The net work done on a hockey puck in circular motion is determined by the mass (m), the speed (v), and the radius (L) of the circular path. The relevant formula for circular motion is acceleration = velocity² / radius, which leads to the net force being calculated as mass × velocity² / radius. According to the Work-Energy theorem, the work done is the product of the net force and the displacement along the circular path. Thus, understanding these relationships is crucial for analyzing the net work on the puck.

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shenwei1988
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A hockey puck of mass m sits on a frictionless, horizontal table tied to a string of length L. The puck starts at rest, and accelerates to some speed v moving in a horizontal circle of radius L. The net work done on the hockey puck,depend on what? L,m,or r??

i forgot the formula for the circular motion.
 
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acceleration = velocity^2 / radius
net force = mass*velocity^2 / radius
 
Work done is force x displacement.
 
Hint: Consider the Work-Energy theorem.
 

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