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IF a stone is tied to one end of the str...

IF a stone is tied to one end of the string and whirled in verticle circle, then the tension in the string at the lowest point is equal to

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SL ARORA-Laws of Motion-Exercise
  1. What is banking of roads ? Why is it essential ? Derive the equation f...

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  2. A small body tied to one end of the string is whirled in a vertical ci...

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  3. IF a stone is tied to one end of the string and whirled in verticle ci...

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  4. A person of mass m isstanding in a lift. Find his apparent weight when...

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  5. A person of mass m is standing in a lift. Find his apparent weight whe...

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  6. The mass of man when standing on the lift is 60 kg. The weight when th...

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  7. Explain why? (a) a horse cannot pull a cart and run in empty space. ...

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  8. Obtain an expression for the centripetal force F acting on a particle...

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  9. Why does a gun recoil on firing? Obtain an expression for recoil veloc...

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  10. LAWS OF LIMITING FRICTION

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  11. Derive an expression for acceleration of a body down a rough inclined ...

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  12. Why are the curved roads banked ? Obtain an expression for angle of ba...

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  13. A 1000 kg car rounds a curve on a flat road of radius 50 m at a speed ...

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  14. In a vertical circle the minimum or critical velocity at highest pint ...

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  15. Why has a horse to pull a cart harder during the first few steps of hi...

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  16. The negatively charged dust particles are attracted by

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  17. A batsman deflects a ball by an angle of 45^(@) without changing its i...

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  18. What do you mean by central forces?

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  19. Draw neat, labelled diagram showing different forces acting on a vehic...

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  20. Detrmine the maximum acceleration of the train in which a box lying on...

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