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Class 11PhysicsWork, Energy and PowerMix Examples-Work, Energy, Power and Collision
Difficult

$A$ block of mass $m$ starts at rest at height $h$ on a frictionless inclined plane. The block slides down the plane,travels across a rough horizontal surface with coefficient of kinetic friction $\mu$,and compresses a spring with force constant $k$ a distance $x$ before momentarily coming to rest. Then the spring extends and the block travels back across the rough surface,sliding up the plane. The block travels a total distance $d$ on the rough horizontal surface. The correct expression for the maximum height $h'$ that the block reaches on its return is

  • A
    $mgh' = mgh - \mu mgd$
  • B
    $mgh' = mgh + \mu mgd$
  • C
    $mgh' = mgh + \mu mgd + kx^2$
  • D
    $mgh' = mgh - \mu mgd - kx^2$
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Class 11 Questions

Class 11

Physics Questions

Chapter

Work, Energy and Power

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Mix Examples-Work, Energy, Power and Collision

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