Three blocks A, B and C of masses $$4$$ kg, $$2$$ kg and $$1$$ kg respectively are in contact on a frictionless surface as shown. If a force of $$14$$ N is applied on the $$4$$ kg block, then the contact force between A and B is

Question

Infinity Learn · Accepted Answer

Given,  m A $$=$$ $$4kg$$,  mB $$=$$ $$2kg$$  and  m C $$=$$ $$1kgSo$$, total mass, M $$=$$ $$4$$ $$+$$ $$2$$ $$+$$ $$1$$ $$=$$ $$7$$ kgNow,  F $$=$$ Ma  ⇒ $$14$$ $$=$$ $$7a$$  ⇒  a $$=$$ $$2ms-2FBD$$ of block A ,F $$-$$ F' $$=$$ $$4a$$ ⇒ F' $$=$$ $$14$$ $$-$$ $$4$$ × $$2$$  ⇒ F' $$=$$ $$6$$ NHence, the contact force between A and B is $$6N$$.

Three blocks A, B and C of masses 4 kg, 2 kg and 1 kg respectively are in contact on a frictionless surface as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between A and B is

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