Question

2) A solid sphere of radius 20 cm and mass 25 kg rotates about an axis through its centre. Calculate its moment of inertia. If its angular veloci changes from 200 rad s-'to 12 o rad s', calculate the torque applied.​

Answer 1

Answer:

mass surrounded by water on three sides or a three location is called peninsula

Answer 2

Explanation:

Radius of sphere R=

2

d

=12.5 cm=0.125 m

Moment of inertia I=

2

mR

2

=

2

25×(0.125)

2

=0.195 kg m

2

Using w

f

=w

i

+αt

Or 12=2+α×5 ⟹ α=2 rad/s

2

Torque applied τ=Iα

Or τ=0.195×2=0.39 Nm