Chapter 10.1, Problem 8PP

To determine

Work done by rope on the box.

Answer to Problem 8PP

  $6543.68\text{J}$

Explanation of Solution

Given:

Length of rope is $d=15\text{m}$

Angle of rope with the floor is $\theta ={46}^o$

Force applied is $F=628\text{N}$

Formula used:

Work done by rope on the box is given as,

  $W=Fd\cos \theta$ ....... (1)

Calculation:

Putting the given values in equation (1)

  $\begin{array}{l}W=628\times 15\times \cos {46}^o\\ =6543.68\text{J}\end{array}$

Conclusion:

So, work done by rope on the box is $6543.68\text{J}$ .