Questions
A small block of mass m is kept on a rough inclined surface of inclination fixed in an elevator. The elevator goes up with a uniform velocity v and the block does not slide on the wedge. The work done by the force of friction on the block in a time t will be
detailed solution
Correct option is C
As block does not side, Hence, force of friction.f=mgsinθIn time t, displacement, s=νt∴ Wf=f·s·cos90°-θ = μmg sin θ .vt .sin θ = μmgvt sin2 θTalk to our academic expert!
Similar Questions
A body of mass 300 kg is moved through 10m along a smooth inclined plane of angle 300. The work done in
moving (in joules) is (Take, g = 9.8 ms-2)
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