A student pulls on a cart and applies a 20N force at an angle of 25 degrees above the horizontal to move a crate a distance of 10m across the floor. How much work does the student do?

W = 181.26 J

Explanation:

Given that,

The force acting on the cart, F = 20 N

It is at an angle of 25 degrees above the horizontal to  move a crate a distance of 10m across the floor.

We need to find work done by the student. The work done by the student is given by :

So, the required work done is 181.26 J.

a and b sometimes have a positive value

temp rises, and expansion