
#1
Apr2008, 05:20 PM

P: 28

1. The problem statement, all variables and given/known data
for an FDB of an tennis ball hitting the racquet. Is the F(a)=F(n) or is F(a) larger then F(n). 3. The attempt at a solution I think that F(a) = F(n). According to Newton's second law, they both receive the same force, however since the tennis ball has less mass, it receiver a larger acceleration then the tennis racquet (which is also anchored by the player's arm). Im pretty sure im right, but it's always good to be sure. 



#2
Apr2008, 06:34 PM

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#3
Apr2008, 06:43 PM

P: 28

F(n) = Normal force 



#4
Apr2008, 06:57 PM

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FDB for TENNIS
Neglecting the weight of the tennis ball, when the racquet hits the ball, there is only one force acting on the ball...the force of the racquet on the ball, which i guess you are calling an applied force, F(a),which is fine. Now by F(n), I think you mean the force of the ball on the racquet?




#5
Apr2008, 06:58 PM

P: 28

yea, the equal and opposite force excerted on the racquet stated by the 3rd law.




#7
Apr2008, 07:24 PM

P: 28

lol, so to sum it up:
force exerted on ball = force exerted on racquet. However, ball flies away extremely quickly and racquet doesnt is becaue racquet is heavier and therefore according to Newton's second low, it doesnt accelerate as much (and also since the racquet is anchored to the player's hands) 



#8
Apr2008, 07:48 PM

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#9
Apr2908, 06:22 AM

P: 28

thank you so much



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