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The potential energy of a projectile at...

The potential energy of a projectile at maximum height is 3/4 times kinetic energy of projection. Its angle of projection is

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

none

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The correct Answer is:
C
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AAKASH SERIES-MOTION IN A PLANE -Exercise -II
  1. A body is projected at an angle 30^(@) to the horizontal with speed of...

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  2. A ball is projected obliquely with a velocity 49 ms^(-1) strikes the g...

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  3. The potential energy of a projectile at maximum height is 3/4 times k...

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  4. Two bodies are thrown from the same point with the same velocity of 50...

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  5. A gun fires a bullet at a speed of 140 ms^(-1). If the bullet is to hi...

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  6. A body is projected with velocity 24 ms^(-1) making an angle 30^(@) wi...

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  7. A particle is thrown with a velocity u at an angle theta from the hori...

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  8. The equation of trajectory of a projectile is y = 10 x - ((5)/(9)) x^(...

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  9. The equations of motion of a projectile are given by x = 36 metre and ...

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  10. An object is projected with a velocity of 20 ms^(-1) making an angle o...

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  11. For a projectile the ratio of maximum height reached to the square of ...

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  12. The speed of a projectile at its maximum height is (3sqrt(3))/(2) time...

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  13. The velocity at the maximum height of a projectile is half of its init...

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  14. A person throws a bottle into a dustbin at the same height as he is 2m...

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  15. A body is projected at angle 30^(@) to horizontal with a velocity 50 m...

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  16. In the above problem range of body is m. [g = 10 ms^(-2)]

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  17. A ball is thrown with velocity 8 ms^(-1) making an angle 60^(@) with t...

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  18. A body is projected at angle 30^(@) to horizontal on a planet with a v...

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  19. A body is thrown with velocity (4i + 3j) metre per seocnd. Its maximum...

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  20. Two particles are projected with same velocity but at angles of projec...

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