a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is:
1) 2a(v^2)d cos theta
2) 2avd cos theta
3) a(v^2)d cos theta
4) avd cos theta

Question

a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is:

1) 2a(v^2)d cos theta

2) 2avd cos theta

3) a(v^2)d cos theta

4) avd cos theta

abhishek dubey · Answer

inthe following case volume of water striking the wall per sec=av (a=cross section of the cylinder,v=velocity of water ie length of cyl striking per sec. but in this problem as water is making angle ,volume of water striking per sec=av sin? mass striking /sec=avpsin? as bouncing back, so momentum change /sec=force=2mv ;m=mass v= vel =2av 2 pcostheta.

Suhail Fayaz · Answer

F=2Pav^2cosβ Here P=density of liquida=area of liquidv^2= square of velocityAnd β=theta given angle!!!!

ankit singh · Answer

F = d t d P ​ = d t 2 d m V cos 6 0 o ​ = d t 2 ( ρ A d x ) V cos 6 0 o ​ = 2 ρ A V 2 cos 6 0 o = 1 0 3 × 6 × 1 0 − 4 × 1 2 2 = 8 6 . 4 N thanks and regards ankit singh

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a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is: 1) 2a(v^2)d cos theta 2) 2avd cos theta 3) a(v^2)d cos theta 4) avd cos theta

a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is:
1) 2a(v^2)d cos theta
2) 2avd cos theta
3) a(v^2)d cos theta
4) avd cos theta

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a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is: 1) 2a(v^2)d cos theta 2) 2avd cos theta 3) a(v^2)d cos theta 4) avd cos theta

a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is:1) 2a(v^2)d cos theta2) 2avd cos theta3) a(v^2)d cos theta4) avd cos theta

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a jet of water with cross sectional area 'a' is striking against a wall at an angle theta with normal and rebounds elastically.If the velocity of water jet is 'v' and density is 'd' the normal force on wall is:
1) 2a(v^2)d cos theta
2) 2avd cos theta
3) a(v^2)d cos theta
4) avd cos theta