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Three blocks A,B and C of masses 4 kg, 2...

Three blocks A,B and C of masses 4 kg, 2kg and 1kg 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

A

18 N

B

2 N

C

6 N

D

8 N

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