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A jet of water with a cross sectional ar...

A jet of water with a cross sectional area 'a' is striking against a wall at an angle `theta` to the horizontal and rebounds elastically. If the velocity of water jet is v and the density is `rho`, the normal force acting on the wall is

A

`2av^(2)rho cos theta`

B

av `rho cos theta`

C

2 av `rho cos theta`

D

av cos `theta`

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The correct Answer is:
A
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
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  14. Which law of Newton is called the law of equilibrium ?

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