three shafts a,b and c are supported in bearings and are connect end end to end, by two hooks joints.the axes of a and c are parallel but not in the same line, and axeis of b makes angles of 20 with the axes of a and c.the moments of inertia of three shaft, with the rotating parts mounted up on them are for a,0.9 mg 2,b,0.15 gm² and c 1.2 gm². if the shafts are set in motion and allowed torotate freely with out friction, what is the percentage fluctuion of speed of the shafts a and c.