Question

velocity 3 rad/s, stops after one revolution. Find
the angular retardation.
A particle performs circular motion with a
constant angular acceleration of 4 rad/s2. If the
radius of the circular path is 20 cm and the initial
angular speed of the particle is 2 rad/s, find the
(i) angular speed of the particle after 0.5 sec.
(ii) angular displacement of the particle in 0.5
second.
1​

Answer 1

Q. 1

a=9π

Explanation:

$v { }^{2} = u { }^{2} + 2( - a)s$

u=0

v=3×2π

s=2π

$a = v {}^{2} \div 2s$

a=9π