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A man of mass 60 kg climbed up 15 steps,...

A man of mass 60 kg climbed up 15 steps, each of height 15 cm. Find the work done .

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CHHAYA PUBLICATION-WORK AND ENERGY-PROBLEM SET -I
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  2. An object of mass 10 kg is kept on a horizontal table. On application ...

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  3. Rainfall , from cloud at a height of 1.6 km above the earth's surface ...

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  4. A man of mass 100 kg climbs up a ladder of height 10 m. The ladder mak...

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  7. A uniform brick is of size 6 cm xx 8cm xx8cm and has a mass of 2.5 kg...

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  8. Mass of a rod of length 4m is 3 kg. Its centre of gravity is 1.5 m fr...

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  9. An object of mass 25 g is under water at a depth of 50 cm . Relative ...

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  10. A constant force vecF =(-hati+2hatj+3hatk) N acts on a body. How much ...

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  11. A force vecF =(2hati-6hatj)N is applied on a body which is sliding ove...

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  12. A particle moves from position vecr1=2hati+3hatj to position vecr2=3ha...

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  13. The relation between the displaement x and the time t for a body of ma...

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  14. A man pushes a roller with a force of 60N through a distance of 30 m. ...

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  15. A rain drop of radius 2mm falls from a height of 250 m above the groun...

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  16. A boy of mass 20 kg , moved up to the top of a building of height 18 ...

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  17. A man of mass 60 kg , climbed 20 steps in 10 s carrying load of 20 kg ...

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  18. Against an average pressure of 10 cm of mercury, a human heart pumps 5...

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  19. Time taken by man of weight 580 N to climb up to the top of a towar 8...

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  20. A pump lifts 5000kg of water per minute through a height of 12m. Find ...

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