Question

A box with a mass of 10kg is pushed up a 5-meter long ramp with an incline angle of 10 degrees, and a coefficient of kinetic friction between the box and the incline plane is 1/4.How much work is done? Thank you in advance!

Answer 1

The work is

$$W=\mu mg d\cos \theta=0.25·10·9.8·5\cos10°=121\text{ J}.$$