Question

A ball attached to the end of a horizontal cord, is revolved in a circle of radius 2 m at a constant speed 60 rpm. Determine the magnitude of angular speed after 2 second ​

Answer 1

Known :

Angular speed (ω) =10 rad/s

Wanted :

(a) Angular speed (ω) after 10 seconds.

(b) Angle (θ) after 10 seconds

Solution :

(a) Angular speed (ω) after 10 seconds

Object in uniform circular motion so that angular speed is constant, 10 rad/s.

(b) Angular displacement (θ)

Constant angular speed 10 radians/second means the object around 10 radians each second. After 10 seconds, the object around 10 x 10 radians = 100 radians.

Answer 2

Explanation:

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