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A crane lifts a 650-kg beam vertically u...

A crane lifts a `650-kg` beam vertically upward 23 m and then swings it eastward 18m. How much work does the crane do ? Neglect friction, and assume the beam moves with constant speed.

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MOTION-WORK, POWER & ENERGY -QUESTIONS FOR PRACTICE
  1. If the coefficient of kinetic friction is 0.21, how much work do you d...

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  2. A crane lifts a 650-kg beam vertically upward 23 m and then swings it ...

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  3. A spring has spring constant k = 200 N//m. How much work does it take ...

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  4. A spring has spring constant k = 200 N/m. How much work does it take t...

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  5. An object is displaced along a straight line from point A (2 m, 1 m , ...

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  6. A skier starts from the top of a hill with speed 5m//s and slides down...

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  7. An object of mass 4 kg moving along x-axis crosses origin with 4 m/s t...

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  8. An object of mass 4 kg moving along x-axis crosses origin with 4 m/s t...

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  9. Initially block shown is at rest and the spring is unstretched, when a...

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  10. Initially block shown is at rest and the spring is unstretched, when a...

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  11. In figure a spring with k = 168 N//m is in its relaxed length and is a...

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  12. In figure a spring with k = 168 N//m is in its relaxed length and is a...

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  13. A block of mass m = 2.0 kg is dropped from height h = 40 cm onto a spr...

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  14. A chain of length L and mass Mis arranged as shown in following four c...

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  15. A particle is constrained to move in the region x ge 0 and its potenti...

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  16. A particle is constrained to move in the region x ge 0 and its potenti...

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  17. A force F=-K(yhati+xhatj) (where K is a positive constant) acts on a p...

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  18. A block starts from rest at point A , slides down a frictionless incl...

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  19. A horse pulls a cart upto 200m in 5 minutes, exerting a force of 750N ...

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  20. An 900-kg roller-coaster car is launched from a giant spring of consta...

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