Chapter 11, Problem 48A

To determine

Increase in potential energy of DA.

Answer to Problem 48A

  $2.058\text{kJ}$

Explanation of Solution

Given:

Mass of DA is $m=60\text{kg}$ .

Height to which DAclimbed is $h=3.5\text{m}$ .

Formula Used:

Increase in potential energy of DAis given by,

  $PE=mgh$

Where, m is the mass, g is the gravitational acceleration and h is the height.

Calculation:

As, $g=9.8\text{}{\text{m/s}}^2$

On putting the values,

  $\begin{array}{l}PE=60\times 9.8\times 3.5\\ =2.058\text{kJ}\end{array}$