Question

Four discs each of mass M and radius R are
arranged as shown in the figure. The moment of
inertia of the system about axis yy will be
(1) 3 MR2
MR2
(3) 5 MR2
(4) EMR?​

Answer 1

Answer:5mrsquare

Explanation:

U have not given the figure.

Still i tried.

If figure is this as i made

Then answer is 5mr square

Hope u understand

Answer 2

Answer:

4 Mr2

Explanation:

I4=I3=MR2/2

I1=I2=MR2/2+MR2

I system =I1+I2+I3+I4

=2*3/2MR2+2*MR2/2

=4MR2.