Question

The Ratio of moment of inertia of disc and sphere of same radius is?.

Answer 1

Answer: 1/2

Explanation:

I of disk = 1/2 MR²

I of hoop = MR²

I of disk / I of hoop = 1÷2MR²/MR²

= 1/2

Answer 2

Hello Dear,

◆ Answer -

MI(disc) : MI(sphere) = 5 : 4

● Explaination -

Moment of inertia of solid disc is given by -

I1 = MR²/2

Moment of inertia of solid sphere is given by -

I2 = 2MR²/5

Ratio of moment of inertia of disc & sphere is -

I1/I2 = (MR²/2) / (2MR²/5)

I1/I2 = 5/4

Therefore, ratio of moment of inertia of disc & sphere is 5:4.

Thanks for asking..