MOI of rod and sq

MOI os square..
smaller sq has mass m length L

Ib=16Is

as length is twice and mass is four times..
and Is=KmL²
Ib=K(4m)(2L)²=16Is ..(i)

by parallel axis theorem
Ib=4Is+4m(l/√2)²
Ib=4Is+2mL² ..(ii)

From (i) and (ii)

Is=ml²/6

4 Answers

This method works for rod... too

i had been working on this method since last night....(again thanx to satan..) :)

any one to try it for a rod??

For kayamant Sir's problem,

use 9 different sq. in this one ne..........

Had replied to kayamant sir's problem :)

No one was trying thats why i posted...

Is=kmL²
Ib=8Is
2Is+2m(L/2)²=Ib

Solving for Is

Is=mL²/12

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