When lifting a bucket of water weighing 8 kg from the well, A 640 J. What is the depth of the well?

Given:

m = 8 kilograms is the mass of a bucket of water that was raised from the well;

A = 640 Joules – the work done to lift the bucket.

It is required to determine h (meter) – the depth of the well.

We will assume that the water from the well was raised evenly, that is, at a constant rate. Then:

A = F gravity * h = m * g * h, where g = 10 Newton / kilogram is an approximate value;

h = A / (m * g);

h = 640 / (8 * 10) = 640/80 = 8 meters.

Answer: the depth of the well is 8 meters.