Chapter 8, Problem 5P

To determine

To Calculate: The diameter of the ball.

Answer to Problem 5P

  $0.0742\text{m}$

Explanation of Solution

Given:

Distance travelled by ball, $d=3.5\mathrm{m}$ .

Number of revolutions =15.

Formula used:

Circumference of a circle = $2\pi r$

Total distance, $d=2\pi r\times n$

  $r$ = radius

  $n$ = number of revolutions

Calculation:

Substituting the given values.

  $\frac{\text{d}}{\text{n}\pi }=2r$

  $\frac{3.5}{15\times \pi }=2r$

  $2r=0.0742$ m.

Conclusion:

Thus, the diameter of the ball is $2r=0.0742\text{m}$ .