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A ball moves on a frictionless inclined ...

A ball moves on a frictionless inclined table without slipping. The work done by the surface on the ball is :

A

positive

B

negative

C

zero

D

none of these

Text Solution

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The correct Answer is:
`(3)`
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NARAYNA-WORK , ENERGY & POWER -EXERCISE -III
  1. A block of mass m attached in the lower and vertical spring The spring...

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  2. A rain drop with radus 1.5 mm falls from a cloud at a height 1200 m fr...

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  3. A ball moves on a frictionless inclined table without slipping. The wo...

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  4. A cord is used to lower vertically a block of mass M through a distanc...

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  5. A child's spring gun when fired vertically sends the ball to a height ...

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  6. A ball of 1 kg drops vetically on to the floor with a speed of 25 m s^...

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  7. Consider the following statement. When jumping from some height, you s...

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  8. A body of mass M at rest explodes into three pieces, two of which of m...

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  9. The potential energy of a particle in a certain field has the form U=a...

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  10. A ball moving with velocity 2 ms^(-1) collides head on with another st...

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  11. An engine pumps water through a hose pipe. Water passes through the pi...

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  12. A particle of mass M starting from rest undergoes uniform acceleration...

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

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

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

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

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

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

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

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

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