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The potential energy of a system increas...

The potential energy of a system increased if work is done

A

by the system against a conservative force

B

by the system against a non-conservative force

C

upon the system by a conservative force

D

upon the system by a non-conservative force

Text Solution

Verified by Experts

The correct Answer is:
A
(a) The potential energy of a system increases if work is done by the system against a conservative force.
`-DeltaU=W_("conservative force")`
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DC PANDEY-WORK, ENERGY AND POWER-CHECK POINT 6.2
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  2. If the speed of a vehicle is increased by 1 ms^(-1), its kinetic energ...

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  3. A running man has half the KE that a body of half his mass has. The ma...

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  4. Two bodies of different masses m(1) and m(2) have equal momenta. Their...

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  5. If the linear momentum is increased by 50%, then KE will be increased...

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  6. The graph betwee sqrt(E) and (1)/(p) is (E=kinetic energy and p= momen...

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  7. The K.E. acquired by a mass m in travelling a certain distance d, star...

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  8. Under the action of a force, a 2 kg body moves such that its position ...

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  9. An object of mass 5 kg is acted upon by a force that varies with posit...

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  10. A block of mass 20 kg is moving in x-direction with a constant speed o...

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  11. Velocity-time graph of a particle of mass (2 kg) moving in a straight ...

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  12. A particle of mass 0.01 kg travels along a space curve with velocity g...

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  13. A mass of 1 kg is acted upon by a single force F=(4hati+4hatj)N. Under...

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  14. A body of mass 5 kg is raised vertically to a height of 10 m by a forc...

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  15. A body of mass 0.1 g moving with a velocity of 10 m/s hits a spring (f...

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  16. A block of mass 2 kg is dropped from a height of 40 cm on a spring who...

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  17. In which of the following cases the, potential energy is defined?

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  18. The potential energy of a system increased if work is done

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  19. A pendulum of length 2 m lift at P . When it reaches Q , it losses 10%...

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  20. A body of mass m thrown vertically upwards attains a maximum height h....

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