Giancoli's Physics: Principles with Applications, 7th Edition
4
Dynamics: Newton's Laws of Motion
Change chapter4-4 to 4-6: Newton's Laws, Gravitational Force, Normal Force
4-7: Newton's Laws and Vectors
4-8: Newton's Laws with Friction, Inclines
Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 22
Q
Sketch the free-body diagram of a baseball
- at the moment it is hit by the bat, and again
- after it has left the bat and is flying toward the outfield. Ignore air resistance.
A
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VIDEO TRANSCRIPT
This is Giancoli Answers with mr. Dychko. When this ball is initially hit by the bat the bat will exert a force like this, this green arrow. And there will be gravity straight down and then after the ball's been hit by the bat, ignoring air friction, the only force on it will be gravity straight down, even though its velocity will be in this direction or, you know, sometime later it'll be down in that direction. Nevertheless the only force that's on it is straight down due to gravity.
COMMENTS
By Iamurfather on Sun, 7/1/2018 - 10:55 PM
where is the normal force for part a) ?
By Iamurfather on Mon, 7/2/2018 - 1:57 AM
Oh, I realized that free body diagram only shows the forces acting on the object, not on other objects....
By Mr. Dychko on Mon, 7/2/2018 - 10:21 PM
Yep, you got it! :)
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