Question

A 50kg boy wanted to get a coconut from the tree. He can do this in two ways: (a) he can climb the tree or (b) use a ladder of length L= 39.37 ft and inclined 30° with the horizontal. The height of the tree is 6m. Find the work done by the gravitational force on the boy in each case.

Answer 1

In both cases $W=mgh=50\cdot9.8\cdot6=2940\ (N)$