Question

A stone attached to a string is being whirled in
a vertical circle. The string is likely to break
when the stone is
At the lovec​

Answer 1

Explanation:

When the stone is at the bottom position forces acting on stone are:

Upward force tension (T), Downward forces are weight (mg) and also

mv²/R centrifugal force

So balancing forces we get :

T=mg+mv²/R

And minimum tension is obtained at highest point which will be:

T=mg − mv²/R

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