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Two bodies A and B of masses 10 kg and 5...

Two bodies A and B of masses 10 kg and 5 kg are placed very slightly separated as shown in figure . The coefficient of friction between the floor and the blocks are `mu_(s) = mu_(k) = 0.4` . Block A is pushed by an external force F . The value of F can be changed . When the welding between block A and ground breaks , block A will start pressing block B and when welding of B also breaks , block B will start pressing the vertical wall .

If F = 50 N , the friction force acting between block B and ground will be :

A

10 N

B

20 N

C

30 N

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A
If ` " "` F = 50 N
as `" " F gt f_(L)`
So contact force between A and B is 10 N .
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