FDB for TENNIS

by vysis
Tags: tennis
 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.
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P: 6,038
 Quote by vysis 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).
What do you mean by F(a) and 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).
This is not Newton's 2nd law.
 Im pretty sure im right, but it's always good to be sure.
Draw a FBD of the ball, not the racquet. What forces act on the ball? The problem is not asking for acceleration.
P: 28
 Quote by PhanthomJay What do you mean by F(a) and F(n)?
F(a) = applied force
F(n) = Normal force

 This is not Newton's 2nd law.
umm, yea sry. I was typing a bit too quickly. Third and Second law.

 Draw a FBD of the ball, not the racquet. What forces act on the ball? The problem is not asking for acceleration.
nono, i mean if a tennis racquet was to hit a tennis ball. Would the applied force and normal force be equal or would applied force be larger?

 Sci Advisor HW Helper PF Gold P: 6,038 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?
 P: 28 yea, the equal and opposite force excerted on the racquet stated by the 3rd law.
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PF Gold
P: 6,038
 Quote by vysis yea, the equal and opposite force excerted on the racquet stated by the 3rd law.