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Balls are being thrown with speed u at an angle theta with the horizontal at the rate of n balls per second .the mass of each ball is m .let the balls complete the projectile at point P where they strike the ground.the average force exerted by the balls at P is: 1)2nmu 2)2nmusintheta 3)2nmucostheta 4)nmu

Balls are being thrown with speed u at an angle theta with the horizontal at the rate of n balls per second .the mass of each ball is m .let the balls complete the projectile at point P where they strike the ground.the average force exerted by the balls at P is:
1)2nmu
2)2nmusintheta
3)2nmucostheta
4)nmu

 

Grade:11

1 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
9 years ago
Hello Student,

Force is given by dP/dt
Only the vertical component of velocity changes when it hits at point P
\\\Delta p=2mv sin\theta \\=>F={2mvsin\theta*n \over 1sec}
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty

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