Self Studies
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Work Energy and...

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  • Question 1
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    A railway porter is holding a weight of 100 kgs on his head and is standing still. What is the work done by him?

  • Question 2
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    Balram pushes 500kg weight on a horizontal frictionless surface a distance of 10 m. The work done by gravitational force is

     

  • Question 3
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    A weight of 20kg falls from a height of 10 m. The work done by the gravitational force is (Take g = 10 m s−2)

  • Question 4
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    A rain drop of mass 2.00 g falls from a height 1.00 km. It hits the ground with a speed of 50.0 m/s. What is the work done by the gravitational force? (Take g = 10 m s−2)

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