How much tangential force is required to stop a cylinder in 5 & which is rotating about its central axis with a speed of 50 rad/s. The length, radius and moment of inertia of cylinder are 10 cm, 5 cm and `0.6 kg m^(2)` respectively.

Explanation

`omega=omega_(0)+alphat`
`alpha=(omega-omega_(0))/(t)=(0-50)/(5)=-"rad"//s^(2)`
As `tau= I alpha= RF rArr F=(I alpha)/(R)=(0.6xx10)/(5xx10^(-2))=120 N`