(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A ball of massmon the end of a string is released from rest when the string is held horizontal

eg:

0-----

Prove that as the ball moves through the lowest point in its swing the string has a magnitude equal to three times the weight of the ball.

2. Relevant equations

Fc = mv^2/r

Weight = mg

3. The attempt at a solution

Because its motion in a vertical circular plane, I thought that mv^2/r would be needed, obviously the equation would end up something like

xxxxxx = 3mg

But I'm not sure how or why that would happen?

Any thoughts?

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# Homework Help: Motion Problems (tension)

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