Question

Q4) Calculate torque acting on a disc rotating about transverse axis having mass of 2 kg, radius 0.5m acted upon by angular acceleration of 2 rad/s²

1 point

a) 50 × 10⁻²Nm
b) 25 × 10⁻²Nm
c) 2.5 × 10⁻²Nm
d) 5.0 × 10⁻²Nm​

Answer 1

Answer:

Moment of inertia I=

2

mr

2

=

2

10×0.2

2

=0.2 kgm

2

Angular acceleration α=

I

τ

=

0.2

10

=50 rad/s

2

Initial angular velocity w

i

=0

Using w

f

=w

i

+αt

Or w

f

=0+50×6=300 rad/s

Hope It Helps ☺