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The potential energy of a system increas...

The potential energy of a system increase,if work is done

A

upon the system by nonconservative force

B

by the system against a conservative force

C

by the system against a nonconservative force

D

upon the system by a conservative force

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The correct Answer is:
D
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The potential energy of a system increased if work is done

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(a) Two protons are brought towards each other. Will the potential energy of the system decrease or increase ? If a proton and an electron be bought nearer, then ?

RESONANCE ENGLISH-WORK POWER AND ENERGY-Exercise
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  2. A block of mass m is attached to two unstretched springs of spring con...

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  3. A body of mass m dropped from a certain height strikes a light vertica...

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  4. A particle moves with a velocity 5hati-3hatj+6hatk ms^(-1) under the i...

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  5. An electric motor creates a tension of 4500 newton in a hoisting cable...

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  6. The potential energy of a partical veries with distance x as shown in ...

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  7. The potential energy of a force filed vec(F) is given by U(x,y)=sin(x+...

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  8. A spring of force constant 800 Nm^(-1) has an extension of 5 cm. The w...

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  9. A body is moved along a straight line by a machine delivering constant...

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  10. The total work done on a particle is equal to the change in its mechan...

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  11. A ring of mass m can slide over a smooth vertical rod. The ring is con...

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  12. The kinetic energy of a particle continuously increases with time. The...

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  13. If force is always parallel to motion

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  14. The given plot shows the variation of U, the potential energy of inter...

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  15. A body of mass 5 kg is acted upon by a variable force.the force varies...

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  16. An elevatore weighinig 500kg is to be lifted up at a constant velocity...

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  17. A car of mass m is driven with acceleration a along a straight level r...

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

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  19. Statement-1: A person walking on a horizontal road with a load on his ...

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  20. Statement-1: Graph between potential energy of spring versus the exten...

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