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Supposse you lift a suitcase from the fl...

Supposse you lift a suitcase from the floor to a table. Does the work your do on the suitcase depend on (a) whether you lift it straight up or alo ng a more complicatd path , (b) the time it takes, (c) the highet of the table, (d) the weight of the suitcase ? Repeat the parts (a) to (d) for the power needed rather than the work.

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PHYSICS GALAXY - ASHISH ARORA-WORK, ENERGY AND POWER-Discussion Question
  1. If you take a pail ow water and turn it upside down all the water will...

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  2. Supposse you lift a suitcase from the floor to a table. Does the work ...

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  3. When an object slides along a rough siuface, the force of friction doe...

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  4. Springs Aand B are identical except that A is stiffer than B. In which...

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  5. If there is a definite force and there is a finite displacement of the...

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  6. A rock thrown with a certain speed from the top of a cliff will enter ...

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  7. If you lift a body to aheight h with a force that is equal to the weig...

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  8. A spring is compressed by tieing its ends together tightly. It is then...

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  9. Potential energy is energy that a body possesses by virtue of its posi...

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  10. In picking upan object from the floor and putting it on a table, we do...

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  11. Reply to the student's statement, "I know there is a centrifugal forc...

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  12. An elevator descends from the top of a building and stops at the groun...

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  13. For a person to loose weight, is it more effective to exercise or to c...

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  14. Does the work done in raising a body through a certain height depend u...

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  15. The displacement of a body depends on the reference frame of the obser...

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  16. A car is running on a road. The driver applies the brakes such that th...

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  17. Why is ittiring to hold a heavy weight eventhough no work is done ?

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  18. If positive work is done putting a body into motion, is the work done ...

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  19. Consider the situation - A laborer carrying bricks on his head on a le...

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  20. Does the work done by a force depend on the frame of reference ?

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