Question

A pulley of radius 0.9 m is used to left a bucket from the well if it took rotations for the pulley to take water out of the well how deep is water in the well?

Answer 1

Answer:

rotations for the pulley to take water out of the well, how deep is water in the. well? (Answer = 20 m)

Explanation:

Basically, a pully is in the shape of a cylinder

So, if we start from a point of the pully and end at the same point we have calculated the C.S.A. of the pully (cylinder),which is equal to 1 rotation.

So, to find the depth of the well, we would have to find CSA × no. of rotations.