Question

A block of weight W is dragged across the horizontal from A to B by constant vertical force P acting at end of the rope. Calculate the work done by force P = (√3+1). Assume that block does not lift off the floor. The height of pulley from ground is h = √3.

Answer 1

As per the given details, we can take A block of weight is W.

It is dragged across the horizontal from A to B by constant vertical force P acting at end of the rope.  

The value of P is (√3+1). The calculation of force is calculated below.

The height of pulley from ground is h = √3.

When it comes to W, it is ∫ F dx.

The answer to this question is 2Fh(1-1/√3).