Question

A particle is moving on a circular path of radius 1.5
m at a constant angular acceleration of 2 rad/s2, its
initial angular speed being 60/t rpm. What will be
its angular displacement (in radians) 2 s after the
start of the motion ?​

Answer 1

Answer:

Radius r=1.5m,α=10rad/s

2

initial angular speed w

0

=

π

60

rpm

=2π×

π

60

×

60

1

rad/s

=2rad/s

Time t=2s

From rotational kinematics

w=w

0

+αt

2+10×2

=2+20

=22rad/s

and θ=w

0

t+

2

1

αt

2

=2×2+

2

1

×10×4

=4+20

=24rad

Hope it's help you