Question

An object is spun around in circular motion such that its frequency is 500 Hz.

Answer 1

Explanation:

Given parameters:

Frequency  = 500Hz

Unknown:

a. Period of rotation

b. Time required to complete 7 rotation

Solution:

The period of rotation is the time taken to complete a turn.

      P = $\frac{t}{n}$

P is the period

t is the time

n is the number of turns

  Period is the inverse of frequency;

        P = $\frac{1}{500}$   = 0.002s

b.

Time required to complete 7 rotation;

            P  = $\frac{t}{n}$  

           t  = P x n

t is the time

P is the period

n is the number of rotations

          t  = 0.002 x 7  = 0.014s