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A 5 kg block is lifted vertically throug...

A 5 kg block is lifted vertically through a height of 5 metre by a force of 60N. Determine (i) the work done by applied force in lifting the block, (ii) the potential energy of the block at 5m, (iii) the kinetic energy of the block at 5 m (iv) the velocity of the block at 5 m-

A

`300 J, 245 J, 55J, 4.69 m//s`

B

`200 J, 245 J, 50J, 4.69 m//s`

C

`150 J, 150 J, 50J, 4.69 m//s`

D

`300 J, 245 J, 100J, 10.69 m//s`

Text Solution

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The correct Answer is:
A
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MOTION-WORK, POWER & ENERGY -Exercise - 1
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  2. A block of mass m slips down an inclined plane as shown in the figure....

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  3. In the given figure, the inclined surface is smooth. The body releases...

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  4. In figure, block A is released from rest, when spring is at its natura...

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  5. A machine, which is 72 percent efficient, uses 36 joules of energy in ...

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  6. A 5 kg block is lifted vertically through a height of 5 metre by a for...

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  7. A car of mass m is driven with acceleration a along a straight level r...

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  8. A truck of mass 30,000 kg moves up an inclined plane of slope 1 in 100...

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  9. A particle moves with a velocity v=(5hati-3hatj + 6hatk) ms^(-1) under...

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  10. A body of mass m, accelerates uniformly from rest to V(1) in time t(1)...

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  11. A self-propelled vehicle of mass m, whose engine delivers a constant p...

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  12. A body is moved along a straight line by a machine delivering constant...

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

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  14. Assume the aerodynamic drag force on a car is proportional to its spee...

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  15. An engine develops 10 kW of power. How much time will it take to lift ...

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  16. A block of mass m slides down along the surface of the bowl from the r...

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  17. A mass m is revolving in a vertical circle at the end of a string of l...

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  18. A particle of mass m is rotating by means of a string in a vertical ci...

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  19. A cane filled with water is revolved in a vertical circle of radius 4 ...

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  20. A body is tied up a string of length l and rotated in vertical circle ...

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