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A man weighs 70 kg. He stands on a weigh...

A man weighs 70 kg. He stands on a weighing scale in a lift which is moving?
upwards with a uniform acceleration of `5 ms^-2`.

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A man weighs 80 kg. He stands on a weighing scale in the lift, which is moving upward with a uniform acceleration of 5 ms^-2 what whould be the reading on the scale? (g = 10 m//s^2) .

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?

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- downwards with a uniform acceleration of 5 m s^-2 ,

A man of mass 60 kg stands on a weighing machine in a lift which is moving downwards with a uniform acceleration 2 m s^-2 . What would be the reading of machine?

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- upwards with a uniform speed of 10 m s^-1 , what would be the reading on scale?

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- What would be the reading if the lift mechanism failed and it hurtled down freely under gravity ?

Two masses 5 kg and 3 kg are suspended with the help of massless inextensible strins as shown in the figure. Calculate T_1 and T_2 when whole system is going upwards with acceleration = 2ms^2 (use g=9.8 ms^-2)

A train is travelling at a speed of 90 kmh^-1 . Brakes are applied so as to produce a uniform acceleration of -0.5ms^(-2) . Find how far the train will move before it is brought to rest?

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 m s^-1 . How much time does the ball take to return to his hands? If the lift starts moving up with a uniform speed of 5 m s^-1 and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands ?

MBD-LAWS OF MOTION-EXAMPLE
  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 weighs 70 kg. He stands on a weighing scale in a lift which is m...

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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. The fig shows the position the position- time graph of a particle of m...

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  6. The fig shows the position the position- time graph of a particle of m...

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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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