Question

Three small balls of mass 4.9 kg, 1.7 kg, and 3.3 kg are connected by light rods laying along the y-axis. The rod connecting the first and second balls is 4.8 m long and the rod connecting the second and third balls is 1.5 m. The entire system rotates around the x-axis, which is between the first and second balls and a distance 3 m from the first ball, at a rotational speed 1.6 s^-1

What is the moment of inertia due to the shift of the rotational axis from the center of mass to the x-axis?

distance of the center of mass of the system from the first ball = 2.92 m

the moment of inertia of the system with respect to the center of mass = 85.49 kg*m^2

the moment of inertia of the system around the x-axis = 85.55 kg*m^2

*i've tried 0.0634, 0.06, and 0.06336 kg*m^2 and they were all incorrect*

Answer 1