Chapter 10, Problem 73A

To determine

Length of the chain used.

Answer to Problem 73A

Length of the chain used is $d=31.4\text{cm}$

Explanation of Solution

Given:

Radius of wheel is $R=38.6\text{cm}$

Radius of gear is $r=5\text{cm}$

Number of revolutions is 1

For one revolution, length of chain used will be perimeter of the gear.

So, length of chain used is

  $\begin{array}{l}d=2\pi r\\ =2\times 3.14\times 5\\ =31.4\text{cm}\end{array}$