Q. 21 - Calculus

Question

The work required to lift an object that weighs $20$ pounds to a height of $100$ feet. 

Step-by-Step Solution

Answer

The work done is$2714Joules.$

Step 1. Given information.

The weight is $20 pounds.$

The height is $100ft.$

Step 2. Value of the Work.

We know,

$$\begin{gathered} W=mgh \\ W=20\times 0.454kg\times 9.8\times 100\times 0.305 \\ W=2714.012 \end{gathered}$$