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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

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The correct Answer is:
A
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MOTION-WORK, POWER & ENERGY -Exercise - 3 Section-A
  1. A vertical spring with force constant k is fixed on a table. A ball of...

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  2. A spherical ball of mass 20kg is stationary at the top of a hill of he...

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  3. An explosion blows a rock into three parts. Two parts go off at right ...

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  4. A block of mass m attached in the lower and vertical spring The spring...

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  5. Two bodies of mass 1 kg and 3kg have position vectors hati+2hatj+hatka...

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  6. An engine pumps water continously through a hose. Water leave the hose...

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  7. A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1). It m...

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  8. A plate of mass m, length b, and breadth a is initially lying on a hor...

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  9. force F on a partical moving in a straight line veries with distance d...

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  10. A body mass M hits normally a rigid wall with velocity v and bounces b...

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  11. A person of mass 60kg is inside a lift of mass 940kg and presses the b...

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

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  13. A car of mass m starta from rest and accelerates so that the instyanta...

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  14. A partical of mass m is driven by a machine that deleveres a constant ...

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  15. A block of mass 10 kg, moving in x-direction with a constant speed of ...

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  16. Two spherical bodies of mass M and 5M & radii R & 2R respectively are ...

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  17. Two similar springs P and Q have spring constants K(P) and K(Q)(K(P)gt...

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  18. A body of mass 1 kg begins to move under the action of a time depende...

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  19. Consider a drop of rain water having mass 1 g falling from a height of...

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  20. A body initially rest and sliding along a frictionless trick from a he...

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