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A particle of mass 1 kg is projected wit...

A particle of mass `1 kg` is projected with an initial velocity `10 ms^(-1)` at an angle of projection `45^(@)` with the horizontal. The average torque acting on the projectile at the time at which it strikes the ground about the point of projection in newton meter is

A

25

B

50

C

75

D

100

Text Solution

Verified by Experts

The correct Answer is:
B
`tau = (dL)/(dt) = m ( u^(2) cos^(2) theta)`
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - II (H.W)
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  4. A uniform meter scale of mass 1kg is placed on table such that a part ...

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  8. A wheel having radius 10 cm is coupled by a belt to another whe...

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  9. A uniform meter scale of mass 1kg is placed on table such that a part ...

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  10. A cubical block of mass m and side L resets on a rough horizontal...

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  11. Two circular rings each of mass M and radius R are attached to eac...

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  12. If I(1) is moment of inertia of a thin rod about an axis perpendicular...

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  13. The mass of a thin circular plate is M and its radius is R. About an a...

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  15. Ratio of densities of materials of two circular discs of same mass and...

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  17. The moment of inertia of a solid cylinder about its natural axis is I....

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