Chapter 10, Problem 44A

To determine

Power developed by cyclist.

Answer to Problem 44A

Power developed by cyclist is $P=125.5\text{W}$

Explanation of Solution

Given:

Force exerted by cyclist is $F=15\text{N}$

Riding distance is $d=251\text{m}$

Time taken is $t=30\text{s}$

Formula Used:

Power developed is given as,

  $P=\frac{W}{t}$ ….. (1)

Calculation:

As, $W=Fd$

So,

  $\begin{array}{l}P=\frac{Fd}{t}\\ =\frac{15\times 251}{30}\\ =125.5\text{W}\end{array}$