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When we apply a force on a wall of infin...

When we apply a force on a wall of infinite mass but the wall remains at rest, have we done any work on the wall? Does the wall do work on us?

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We have done work in streching the muscles, not in displacing the wall. The wall does not do work as we are at rest.
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CENGAGE PHYSICS-WORK, POWER & ENERGY-Exercise 8.1
  1. Discuss whether any work is being done by each of the following agents...

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  2. State the following statements as true or false. a. The work done by...

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  3. When we apply a force on a wall of infinite mass but the wall remains ...

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  4. When you walk on a surface, who does work on what? If the surface has ...

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  5. A man is running down an inclined plane. Is he doing work or is work b...

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  6. A car is travelling on road at 50kmh^-1. The driver applies brakes and...

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  7. There are two inclined planes with the same vertical height, but with ...

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  8. In a tug of war, one team is giving way to other. What work is being d...

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  9. A cyclist comes to a skidding stop in 10m. During this process, the fo...

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  10. A gardener moves a lawn roller through a distance of 100m with a force...

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  11. A body constrained to move along the z-axis of a co-ordinate system, i...

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  12. An object is displaced from point A(2m,3m,4m) to a point B(1 m,2 m,3 ...

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  13. An object is displaced from positin vector r1=(2hati+3hatj) m to r2=(4...

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  14. An object is displaced from a point A(0, 0, 0) to B(1m, 1m , 1m) under...

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  15. A force vecF=(3xN)hati+(4N)hatj, with x in meter, acts on a particle, ...

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  16. A body moves from point A to B under the action of a force, varying in...

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  17. A 10-kg block moves in a straight line under the action of a force tha...

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  18. A force F acts on a body such that it is always at an angle of 45^@ to...

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  19. A force F is exerted on a body of mass M, which is connected to a spri...

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  20. A body is thrown on a rough surface such that the friction force actin...

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