Question

043. The moment of inertia of a solid sphere 1kg
mass and diameter 8cm about the tangent
is
(A) 3.2x10-4kgm?
(B) 8x104kgm?
(C) 16x104kgm?
(D) 22.4x10-4kgm?​

Answer 1

Explanation:

2

mR

2

=20

About any tangent:

I=

5

2

mR

2

+mR

2

=

5

7

mR

2

=

5

7

×50=70kg−m

2

∴ Option A is correct.