Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through:

a) the midpoint of the rod;
b) the center of mass of the system of particle:

Question

Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through:

a) the midpoint of the rod; 
b) the center of mass of the system of particle:

anonymous · Answer

"light rod"  ~ mass less

(3.1 *4+ 6.6*4)/(3.1+6.6) =

Center of mass of rod at x =

anonymous · Answer

mid point x=2

anonymous · Answer

I don't think its the right answer