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A balloon at rest on the ground is r...

A balloon at rest on the ground is rising is rising upward with acceleration `( g) / (8) ` . A stone is dropped from the balloon when it is at height H . Show that the time taken by the stone to touch the ground is ` 2 sqrt( (H )/( g) ) `.

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CHHAYA PUBLICATION-QUESTION PAPERS OF WBCHSE -2018-SECTION -II
  1. what are the sighificant figures in the result of addition of 9.8 ...

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  2. IF vecA = 0.4 hati + 0.3 hatj + c hatk be a unit vector , t...

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  3. which two of the following physical quanities are dimensionall...

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  4. when sound enters from air or vice - versa, which physical que...

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  5. Find the angle between the two vectors vec A = hati - 2 hatj ...

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  6. The distance - time graph of a moving particle is given by x...

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  7. A balloon at rest on the ground is rising is rising upward with...

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  8. A spring having spring constant K is cut into two parts in ...

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  9. Write down the mathematical form of the first law of thermodyn...

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  10. Show that the equation x=1 sin omega t + b cos omega t r...

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  11. Define inertial frame of reference .

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  12. A particle moves from a point vec r (1) = hati + 2 hatj in met...

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  13. Define conservative force . Show that the work done around a c...

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  14. Define angular monentum ( vecL) and torque ( vec tau ) ....

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  15. A uniform solid sphere of mass M and radius R rolls down an ...

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  16. Define centre of mass . Write down its mathematical form .. Two...

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  17. Define acceleration due to gravity . Deduce an expression of...

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  18. What is meant by gravitational potential energy ? Deduce an exp...

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  19. Define degrees of freedom . Write down the principle of equipa...

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  20. Show that for ideal gas C(P ) - C(v ) = R and gamma =1 +(2)...

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