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Q.

A cubical block of side ‘L’ rests on a rough horizontal surface with coefficient of friction . A horizontal force F is applied on the block as shown in figure. The minimum force required to topple the block is

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a

mg(1-μ)

b

mg4

c

mg2

d

Infinitesimal

answer is C.

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Detailed Solution

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to topple,

F×a≥mga2     ⇒    F≥mg2

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