Write an expression for the work done by friction as the block slides from A to B. Your answer should be in terms of m, h, vB, and g (the acceleration due to gravity).

Complete Question

The complete question is shown on the first uploaded image  

The expression is  

Explanation:

Generally the work energy theorem is mathematically represented as

Here   is the potential  energy at A which is mathematically represented as

And   is the kinetic energy at B which is mathematically represented as

So

=>  

1 a

2 b

3 b

4 d

5 d

6 d

explanation: