Questions
Figure shows two blocks A and B pushed against the wall with the force F. The wall is smooth but the surfaces in contact of A and B are rough. Which of the following is true for the system of blocks to be at rest against wall?
detailed solution
Correct option is D
For system A and B together there is no upward force to balance the weight (mA+mB) g. So, system can never be in equilibrium.Talk to our academic expert!
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A person just holds a block weighing 2kg between his hands & just keeps it from falling down by pressing it with his hands. If the force exerted by each hand horizontally is 50N, the coefficient of friction between the hand & the block is
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