Question

If a
student fixes
two such discs
at the ends of
the meter scale
and rotates the system about an axis
perpendicular to the length of the scale as in
figure. What will be the Moment of inertia of
the system?

Answer 1

Answer:

0

Explanation:

As moment of Force is dot product, and theta=90, A.B=abcos90

=A.B.0

=0