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The potential energy of a system increas...

The potential energy of a system increased if work is done

A

upon the system by a 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:
`(2)`
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NARAYNA-WORK , ENERGY & POWER -EXERCISE -III
  1. Two sphere A and B of masses m(1) and m(2) respectivelly colides. A is...

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  2. When the KE of a particle is increased by 300%, the momentum of the bo...

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

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  4. A body projected vertically from the earth reaches a height equal to e...

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  5. Force F on a particle moving in a straight line varies with distance d...

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  6. A mass m moving horizontal (along the x-axis) with velocity v collides...

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

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  8. The potential energy of a particle in a force field is: U = (A)/(r^(...

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  9. A solid cylinder of mass 3 kg is rolling on a horizontal surface with ...

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  10. Two sphere A and B of masses m(1) and m(2) respectivelly colides. A is...

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  11. A uniform force of (3 hat(i)+hat(j)) newton acts on a particle of mass...

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  12. A body of mass (4m) is laying in xy-plane at rest. It suddenly explode...

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  13. The heart of a man pumps 5 liters of blood through the arteries per mi...

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  14. A ball is thrown vertically downwards from a height of 20m with an int...

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  15. On a friction surface a block a mass M moving at speed v collides elas...

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

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

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  18. Two particles of masses m(1),m(2) move with initial velocities u(1) an...

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  19. Two similar springs P and Q have spring constant K(P) and K(Q) such th...

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  20. What is the minimum velocity with which a body of mass m must enter a ...

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