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A body of mass 1kg falls from the top o...

A body of mass 1kg falls from the top of a cliff 50 m high and buries itself one metre deep in mud.Find the average resistance offered by a mud and the time of penetration.

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BINA LIBRARY-WORK,ENERGY AND POWER-EXERCISE
  1. A man cycles up a hill whoes slope is 1 m in 25 at the rate of 10 km/h...

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  2. A bullet of mass 12 g strikes a soild surface at a speed of 400m/s. It...

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  3. A body of mass 1kg falls from the top of a cliff 50 m high and buries...

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  4. A force of 1000 dynes acts on a particle of mass 500 g for 10seconds....

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  5. Calculate the power of a motor in kilo-watt ,which is capable of risin...

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  6. A pump lifts 20 kg of water in one minute to a vertical height of 30m....

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  7. Two bodies having masses 1g and 4g are moving with equal K.E find the ...

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  8. A 200 g ball falls from rest through air. If its speed is 10 m/s after...

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  9. A bullet of mass 100 g strikes a wooden plank with a velocity of 300ms...

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  10. A force of 100 dynes acts on a particle of mass 0.5 kg for 10 sec. Cal...

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  11. An engine lifts 200kg of metal to a vertical height of 30 m in one min...

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  12. A car of weight 1000 kg moves with a uniform speed of 36Km/hr up an ...

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  13. An engine of weight one metric ton is going up an inclined plane ,mak...

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  14. A ball of mass 1.2 kg moving with velocity 20cm/s collides with anoth...

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  15. A block of mass 2kg moving with certain velocity collides with a block...

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  16. A block of mass 2 kg moving at 2.0m/s collides with another block of e...

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  17. A block of 1.2 kg moving at 20 cm/s collides head-on with a simmilar b...

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  18. A position dependent force F=(7-2x+3x^2)N acts on a small body of mass...

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  19. A body constrained to move in y directions is sunjected to a force F=(...

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  20. The K.E acquired by a mass m travelling a certain distance d starting ...

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