Question

Calculate the moment of inertia of a cylinder of length 1.5m

Answer 1

Answer:

i=mr'2

i=m*1.5'2i=2.25m

Answer 2

Rotational inertia is important in almost all physics problems that involve mass in rotational motion. It is used to calculate angular momentum and allows us to explain (via conservation of angular momentum) how rotational motion changes when the distribution of mass changes.