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Figure shows the vertical section of a f...

Figure shows the vertical section of a frictionless surface. A block of mass `2kg` is released from rest from position A, its KE as it reaches position C is (`g=10ms^-2`)

A

`180 J`

B

`140 J`

C

`40 J`

D

`280 J`

Text Solution

Verified by Experts

The correct Answer is:
`(2)`
`W = mg [h_(1) - h_(2)]`
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NARAYNA-WORK , ENERGY & POWER -EXERCISE -II (C.W)
  1. System shown in figure is released from rest . Pulley and spring is ma...

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  2. The potential energy of a particle of mass m is given by U = (1)/(2) ...

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  3. Figure shows the vertical section of a frictionless surface. A block o...

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  4. A body of mass m falls from a height h and collides with another body ...

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  5. Power supplied to a particle of mass 4 kg varies with time as P=(3t^(2...

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  6. A particle of mass m is moving in a circular path of constant radius r...

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  7. A constant power P is applied to a particle of mass m. The distance tr...

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  8. A body is moved from rest along a straight line by a machine deliverin...

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  9. Power applied to a particle varices with time as P =(3t^(2)-2t + 1) wa...

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  10. A car of mass M accelerates starting from rest. Velocity of the car is...

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  11. Power supplied to a particle of mass 4 kg varies with time as P=(3t^(2...

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  12. A particle is moving along x-axis under the action of a force F, which...

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  13. A body of mass m is projected with intial speed u at an angle theta wi...

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  14. A stone is tied to a string of length l and is whirled in a vertical c...

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  15. A simple pendulum is oscillating with angular displacement 90^(@) For ...

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  16. A nail is fixed at a point P vertically below the point of suspension ...

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  17. A simple pendulum with a bob of mass 'm' swings with angular amplitude...

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  18. A stone of mass 1 kg tied to a light inextensible string of lenth L=(...

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  19. A stationary body explodes into two fragments of masses m(1) and m(2)....

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  20. A mass of 1 kg is thrown up with a velocity of 100 m/s. After 5 second...

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