Question

a ball hanging on a string. The ball swings from point W to point Z and back to point W. ​

Answer 1

Answer:

displacement=0 because it travels a distance and came back to starting point

Answer 2

Answer:

It is a case of simple pendulum .

we know that

by conservation of energy

KE+PE= constant.

At point Y , PE is min.

So, the kinetic energy at mean position is maximum in this case.

Since ,Y is the mean position , so, the kinetic energy is max. at point Y.

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