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  4. Block A of mass 4 kg and block B of mass 6 kg are resting on a horizontal surface as shown in the figure. There is no friction between the block B and the horizontal surface. The coefficient of friction between the blocks is 0.2. If the value of g=10 m/s2, the maximum horizontal force F that can be applied on block B without any relative motion between A and B is

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Q. Block A of mass 4 kg and block B of mass 6 kg are resting on a horizontal surface as shown in the figure. There is no friction between the block B and the horizontal surface. The coefficient of friction between the blocks is 0.2. If the value of $ g=10\,m/{{s}^{2}}, $ the maximum horizontal force F that can be applied on block B without any relative motion between A and B isPhysics Question Image

Rajasthan PMTRajasthan PMT 2011

Solution:

We know that $ F=ma $ For combination of blocks $ m=10\,\,kg $ and $ a=2\,\,m/{{s}^{2}} $ $ F=10\times 2 $ $ F=20\,\,N $