Question

Four masses are arranged as shown. They are connected by rigid, massless rods of lengths 0.50 m and d = 0.73 m. What torque must be applied to cause an angular acceleration of 0.63 rad/s2 about the axis shown?
4 kg
3 kg
5 kg
2 kg

Answer 1

I=(0.73/2)²(4+3+5+2) = 1.87 kg•m²
M=Iε=1.87•0.63 =1.175 kg•m