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A small block of mass m is kept on a rough inclined surface of inclination θ. The block does not slide on the surface. The work done by friction on block in time t will bea) Zerob) -mgvt sinθ.cosθc) mgvt sin ²θd) mgvt cos2θ |
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Answer» A small block of mass m is kept on a rough inclined surface of inclination θ. The block does not slide on the surface. The work done by friction on block in time t will be a) Zero b) -mgvt sinθ.cosθ c) mgvt sin ²θ d) mgvt cos2θ |
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