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Questions  

A block of mass 10 Kg is on a rough horizontal table.  The coefficient of friction between the block and table is 0.45, then frictional force on the block is (g = 10 m/s2

a
4.5 N
b
45 N
c
0.45 N
d
Zero

detailed solution

Correct option is D

Frictional force exists only when there is a relative motion or tendency of relative motion between block and table.

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