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Plzz explian a, b and c part clearly in detail.....thank u

Plzz explian a, b and c part clearly in detail.....thank u

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Grade:12

3 Answers

Vikas TU
14149 Points
4 years ago
b. ​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
=2av2 pcostheta.
Vikas TU
14149 Points
4 years ago
  1. The net orce is defined as the rate of chnge of momentum F = d(mv)/dt , This is the case of same velocity and changing mass so, F=-u*(dm/dt) , Hope this helps, 
aswanth nayak
100 Points
4 years ago
 
 ​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
=2av2 pcostheta.
  1. The net orce is defined as the rate of chnge of momentum F = d(mv)/dt , This is the case of same velocity and changing mass so, F=-u*(dm/dt) , Hope this helps, 

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