Question

1) The moment of inertia of a thin uniform circular
disc about one of its diameter is I. Its moment of
inertia about an axis tangent to it and
perpendicular to its plane is
​

Answer 1

Answer:

The moment of inertia about an axis  perpendicular to the plane

Iplane=2* moment of inertia about diameter

I plane=2I

let m is the mass of the disc and r is the radius of the disc

I tan=2I+mr^2

I=mr^2/4

I tan=2*mr^2/4+mr^2

=6I