Question
A wheel having moment of inertia 4 kg m2 about its symmetrical axis, rotates at rate of 240 rpm about it. The torque which can stop the rotation of the wheel in one minute is
Joshi sir comment
angular retardation = 2π[240/60]/60 this is by the formula ω = ω0+αt where ω0 = 0
now use τ = Iα