Question

A flywheel of mass 15kg and a radius of 0.2m is mounted on a horizontal axle of radius 0.01m and negligible mass A force of 40N is applied tangentially to the axle.Find moment of inertia of the wheel,torgue, angular acceleration and angular velocity at the 10 s

Answer 1

$I=\frac{m(R-r)^2}2=0.27~kg\cdot m^2,$

$T=FR=8~N\cdot m,$

$\varepsilon=\frac TI=29.6~\frac{rad}{s^2},$

$\omega=\varepsilon t=296~\frac{rad}s.$