Question

2 * 1.5 * (.850/2)^2A small ball with mass 1.50 kg is mounted on one end of a rod 0.850 m long and of negligible mass. The system rotates in a horizontal circle about the other end of the rod at 5060 rev/min.

Answer 1

given,

mass of the rod = 1.50 Kg

length of rod = 0.85 m

rotational velocity = 5060 rev/min

now calculating the rotational inertia of the system.

`I = m L^2`

where L is the length of road, we will take whole length of rod because mass is at the end of it.

`I = 1.5 * 0.85^2`

I = 1.084 kg.m²

hence, the rotational inertia the system is equal to I = 1.084 kg.m²