Two blocks masses '3m' and '2m' are in contact on a smooth table. A force P is first applied horizontally on block of mass '3m' and then on mass '2m'. The contact force between the two block sin the two cases are in the ratio.
f1=(2m)(acc.)
=2m×P5m=25P
f2=(3m)(acc.)
=3m×P5m=35P
f1f2=2P/53P/5=23