3. Angular acceleration and Torque. Suppose you have the object below with the rotational axis at the round corner in the picture. The moment of inertia of each beam is given by I=(1/3)ml2, with the masses of the two beams as m1=2.5kg, m2=1.2kg, with lengths L1=3.5m, L2=1.5m. The forces are applied at the distances and angles specified below relative to their respective beams. The object is initially at rest. If I want to make it rotate at a rate of 56 rev/min, how long will it take? a. Calculate the total moment of inertia of the object. b. Calculate or derive expression for torque by each of the forces. Calculate the net torque. c. Solve for the resulting angular acceleration, and then the time. 02= 249 direction of rotation required F2=78N r2=1.5m r1=3.5m 01= 120 K F1=15N