Three blocks M, m and M′ lie in contact on a smooth horizontal floor and are pushed by a force F from the left, with M′>M. If N is the contact force between M and m and N′ between m and M′, then:

Question

G1 Physics · Accepted Answer

With common acceleration a=F/(M+m+M′), N must accelerate the masses to the right of the first contact, while N′ accelerates only M′. Since M′>M, the source result is N>N′.

Three blocks M, m and M′ lie in contact on a smooth horizontal floor and are pushed by a force F from the left, with M′&gt;M. If N is the contact force between M and m and N′ between m and M′, then:

Three blocks M, m and M′ lie in contact on a smooth horizontal floor and are pushed by a force F from the left, with M′>M. If N is the contact force between M and m and N′ between m and M′, then: