two point masses of 2kg and 10kg are connected by a weight less rod of length 1 2 m - Physics - System Of Particles And Rotational Motion

Question

two point masses of 2kg and 10kg are connected by a weight less rod
of length 1 2 m Calculate the M I of the system about an axis
passing through the centre of mass and perpendicular to the system

Vara · Accepted Answer

Centre of mass:

XCM=m1x1+m2x2m1+m2         =2×0+10×1
22+10         =1 m

Determination moment of inertia:

r1=XCM    = 1 mr2=L-XCM    = 1
2 -1      = 0 2 m

I=m1r12+m2r22  =212+100 22   = 2
4 kg m2

Answer:

Moment of inertia, I=2 4 kg m2

two point masses of 2kg and 10kg are connected by a weight less rod of length 1.2 m. Calculate the M.I of the system about an axis passing through the centre of mass and perpendicular to the system.