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A man of mass 70 kg stands on a weighing...

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- upwards with a uniform acceleration of `5 m s^-2`. What would be the readings on the scale in each case?

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PSEB-Laws of Motion-Exercise
  1. A man of mass 70 kg stands on a weighing scale in a lift which is movi...

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  2. A man of mass 70 kg stands on a weighing scale in a lift which is movi...

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  3. A man of mass 70 kg stands on a weighing scale in a lift which is movi...

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  4. A man of mass 70 kg stands on a weighing scale in a lift which is movi...

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  5. Figure shows the position-time graph of a particle of mass 4 kg. What...

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  6. Figure shows the position-time graph of a particle of mass 4 kg. What ...

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  7. Two bodies of masses 10 kg and 20 kg respectively kept on a smooth, ho...

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  8. Two bodies of masses 10 kg and 20 kg respectively kept on a smooth, ho...

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  9. Two masses 8 kg and 12 kg are connected at the two ends of a light ine...

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  10. A nucleus is at rest in the laboratory frame of reference. Show that i...

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  11. Two billiard balls each of mass 0.05 kg moving in opposite directions ...

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  12. A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzz...

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  13. A batsman deflects a ball by an angle of 45^@ without changing its ini...

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  14. A stone of mass 0.25 kg tied to the end of a string is whirled round i...

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  15. If, in Exercise 5.21, the speed of the stone is increased beyond the m...

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  16. If, in Exercise 5.21, the speed of the stone is increased beyond the m...

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  17. If, in Exercise 5.21, the speed of the stone is increased beyond the m...

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  18. Explain why:- a horse cannot pull a cart and run in empty space.

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  19. Explain why:- passengers are thrown forward from their seats when a sp...

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  20. Explain why:- it is easier to pull a lawn mower than to push it.

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