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Define mass . State its SI and CGS units...

Define mass . State its SI and CGS units.

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The mass of a body is the amount of matter present in it . Its SI unit is the kilogram (kg) and CGS unit is the gram ( g ) . [ Note : Mass has only magnitude , not direction . Thus it is a scalar quantity . ]
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-GRAVITATION -Answer the following questions :
  1. Why does an object released from the hand , fall on the earth ?

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  2. Does the value of g depend on the mass of the falling body ? Why ?

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  3. Define mass . State its SI and CGS units.

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  4. Define weight . State its SI and CGs units .

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  5. As per the request of one of his friends from the equator , Rahul buys...

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  6. If the value of g suddenly becomes twice its value , it will become tw...

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  7. What is the difference between mass and weight of an object ? Will the...

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  8. What is free fall ?

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  9. Define free fall .

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  10. Explain the term free fall and state the corresponding kinematical equ...

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  11. During a free fall , will a heavier object accelerate more than a ligh...

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  12. If you had to calculate the mass of the earth , how would you do it ?

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  13. What is gravitational potential energy?

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  14. Define gravitational potential energy. Write the formula for it.

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  15. What is escape velocity? Obtain an expression for it.

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  16. Define escape velocity.

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  17. Explain the term escape velocity.

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  18. Write a short note on escape velocity.

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  19. Using the law of conservation of energy, obtain the expression for the...

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  20. Express escape velocity in terms of g and R.

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