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A box 'A' is lying on the horizontal flo...

A box 'A' is lying on the horizontal floor the compartment of a train running along horizontal ralls from left to right. At time 't', it decelerates. Then the resultant contact force R by the floor on the box is given best by :

A

B

C

D

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The correct Answer is:
C
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MOTION-NLM & FRICTION-EXERCIS-1
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  9. A body A of mass 1 kg rests on a smooth surface. Another body B of mas...

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  19. There block A B ,and C of equal mass m are placed one over the other o...

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