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The work done by a gravitational force a...

The work done by a gravitational force acting on a free fall body will be positive , negative or zero ?

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Positive , Because the displacement of free fall body is I the direction og gravitational force .
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KUMAR PRAKASHAN-WORK, ENERGY AND POWER -SECTION - C Objective Questions (VSQs)
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  4. Negative sign in W = -mgh denotes what ?

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  5. Whether the potential energy increases or decreases in the case of ris...

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  9. What is the work done on the body moving in uniform circular motion ?

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  10. What is the area under the graph of F to x ? (F = external force , x =...

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  11. The momentum of two unequal bodies is same , then which onehas larger ...

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  12. The momentum of a body increased doubled .What is the percentage of i...

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  13. A body is thrown upward at intial velocity of 7 ms^(-1) , then at whic...

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  14. Obtain an equation of momentum in terms of mass and kinetic energy .

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  15. Mention the dimensional formula of spring constant .

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  16. What is necessary for work done when the force is exerted on the body ...

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  17. Equal force is applied on one heavy weight and one light weight body ....

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  18. When two bodies A and B are collide with each other . They work on ea...

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  19. One body is displaced in the direction of X - axis up to 4 meter under...

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  20. What will be the work done on the body moving with constant speed ?

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