A person is pulling a 50N block up a 60 degree incline over 0.8m

Question

A person is pulling a 50N block up a 60 degree incline over 0.8m

determine the work done by the string on the block as the block is lifted 0.80m along the incline. The string tension is 50 N

Answer 1

The work done by the string on the block is just the product of the force exerted on the block by the string times the distance the force is exerted over (if the force is constant, which it is in this case).

W = F_T×d = 50N × 0.80m = 40J