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The work done by all the forces (externa...

The work done by all the forces (external and internal) on a system equals the change in

A

total energy

B

kinetic energy

C

potential energy

D

none of these

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-WORK, POWER & ENERGY -EXERCISE - I
  1. A heavy stone is thrown from a cliff of height h with a speed v. The s...

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  2. A) Work done by frictional force is always negative B) A body at res...

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  3. The work done by all the forces (external and internal) on a system eq...

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  4. . (A): Mountain roads rarely go straight up the slope. (R): Slope o...

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  5. body is allowed to fall from a height h above the ground. Then match t...

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  6. . A curve is drawn expressing the kinetic energy of a particle as a fu...

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  7. . A body is moving unidirectionally under the influence of a source of...

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  8. Which of the diagrams shown below most closely shows the variation in ...

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  9. . A raindrop falling from a height .h. above ground, attains a near te...

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  10. Two inclined frictionless tracks, one gradual and the other steep meet...

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  11. A heavy stone is thrown from a cliff of height h in a given direction....

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  12. 40. Which of the diagrams correctly shows the change in kinetic energy...

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  13. A particle is acted upon by a force of constant magnitude which is alw...

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  14. Two spheres A and B collide. If the momentum of A is doubled in the co...

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  15. Internal forces can change

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  16. (A): Mass and energy are not conserved separately, but are conserved a...

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  17. Two bodies A and B of masses m, and m, moving with velocities V(1) and...

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  18. Two particles of equal masses have an elastic collision, the target pa...

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  19. . A bullet hits a block at rest on a frictionless horizontal surface a...

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  20. A heavier sphere moving eastward with a certain velocity .v. collides ...

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