Questions
A body of mass 8 kg lies on a rough horizontal table. It is observed that a certain horizontal force gives the body an acceleration of . When this force is doubled, the acceleration of the body is . The coefficient of friction is
detailed solution
Correct option is D
F−f=8×4=322F−f=128f=64N⇒μmg=64⇒μ=0.8Talk to our academic expert!
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A chain lies on a rough horizontal table. It starts sliding when one-fourth of its length hangs over the edge of the table. The coefficient of static friction between the chain and the surface of the table is
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