A wheel of radius R, mass M and moment of inertia I is mounted on a
A light cord is wrapped around the wheel and attached to a block of mass m. Calculate the angular acceleration of the wheel.
Moment of inertia of a wheel is given by;
`I = m*R^2`
The torque applied on the chord is due to the weight of mass m as the tension of chord.
Where g is the gravitational accelaration.
But we know that `tau = I*alpha`
Where `alpha` is the angular accelaration.
Torque `tau = R*T = R*mg`
`alpha = R*(mg)/I` =`(R*mg)/(MR^2)`` =((mg)/(MR))`
So angular accelaration is (mg/MR)