Question

In covering a distance s metres, a circular wheel of radius r metres makes `s/(2 pir)` revolutions. Is this statement true? Why?

Options

• True

• False

Answer 1

This statement is True.

Explanation:

The distance travelled by a circular wheel of radius r m in one revolution is equal to the circumference of the circle =`2pir`

No. of revolution completed in `2pir` distance = 1

No. of revolution completed in 1 m distance = `1/(2pir)`

No. of revolution completed in s m distance = `(1/(2pi)) xx s` 

= `s/(2pir)`