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Work, Energy and Power Test - 65
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  • Question 1/10
    4 / -1
    A spring 40 mm long is stretched by the application of a force. If 10 N force required to stretch the spring through 1 mm, then work done in stretching the spring through 40 mm is
  • Question 2/10
    4 / -1
    A body of mass 3 kg is under a force, which causes a displacement in it given by S = t3/3 (in m). Find the work done by the force in first 2 seconds
  • Question 3/10
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    The force constant of a wire is k and that of another wire is 2k. When both the wires are stretched through same distance, then the work done
  • Question 4/10
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    A body of mass 0.1 kg moving with a velocity of 10 m/s hits a spring (fixed at the other end) of force constant 1000 N/m and comes to rest after compressing the spring. The compression of the spring is
  • Question 5/10
    4 / -1
    A mass of 0.5 kg moving with a speed of 1.5 m/s on a horizontal smooth surface, collides with a nearly weightless spring of force constant k = 50 N/m. The maximum compression of the spring would be
  • Question 6/10
    4 / -1
    A spring with spring constant k when stretched through 1cm, the potential energy is U. If it is stretched by 4 cm. The potential energy will be
  • Question 7/10
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    A spring with spring constant k is extended from x = a to x = x1. The work done will be
  • Question 8/10
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    If a long spring is stretched by 0.02 m, its potential is U. If the spring is stretched by 0.1 m, then its potential energy will be
  • Question 9/10
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    The spring extends by x on loading, then energy stored by the spring is (if T is the tension in spring and k is spring constant)
  • Question 10/10
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