Question

Q.4. An object moves along a circular path of radius 1 m with variable speed. If the
speed of the object change from 10 m/s to 20 m/s in 5 s. What is it angular
acceleration?​

Answer 1

Answer:

2 rad/sec²

Explanation:

Given

u = Initial Speed = 10 m/ s

v = Final Speed = 20 m/s

t = time taken = 5 s

r = radius of circular path = 1 m

Formula

Angular Acceleration of the particle is given by

α = (ω₂ - ω₁)/t = (v - u)/tr

Calculation

Using the given values in the above equation

α = (20 - 10)/(5*1)

= 10/5

= 2 rad/sec²