A small metal object is tied to the end of a string and whirled round a circular path of radius 30cm. The object makes 20 oscillations in 5 seconds. Calculate: the angular and linear speeds of the object

(i) The angular speed of the small metal object is 25.133 rad/s

(ii) The linear speed of the small metal object is 7.54 m/s.

Explanation:

Given;

radius of the circular path, r = 30 cm = 0.3 m

number of revolutions, n = 20

time of motion, t = 5 s

(i) The angular speed of the small metal object is calculated as;

(ii) The linear speed of the small metal object is calculated as;