Test Academy | A block of mass M is placed on a rough floor of a lift. The coefficient of friction between the block and the floor is μ . When the lift falls freely, the block is pulled horizontally on the floor. What will be the force of friction μ Mg, μ Mg/2, 2μ Mg, None of these

Question

A block of mass M is placed on a rough floor of a lift. The coefficient of friction between the block and the floor is μ . When the lift falls freely, the block is pulled horizontally on the floor. What will be the force of friction

Options :

μ Mg
μ Mg/2
2μ Mg
None of these

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