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AIIMS 2017 Physics Question Paper for free online practice with solutions

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Question : 19

Total: 60

A small block of mass m is kept on a rough inclined surface of inclination θ 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 time t as seen by the observer onthe inclined p lane will be

zero
mgvt cos2θ
mgvt sin2θ
mgvt sin2θ

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