2006-08-13 06:09:51 · 5 answers · asked by Jeremy T 1 in Science & Mathematics ➔ Physics
Hi. Not sure if I understood the question, but if you're asking about the physics behind a curve ball, it goes something like this:
A normal fast ball is thrown so that the ball "rolls" off the fingertips. This backspin causes air above the ball to move faster than the air below it, creating "lift." This is why fastballs travel in a straighter path.
A curveball is thrown so that the ball spins "foward" like a tire rolling toward the batter, so the air-flow model of the fastball works in reverse--more air resistance on top of the ball than below causes it to drop sharply.
Also, in a fastball most of the pitcher's arm energy is transferred into the ball's foward movement. When throwing a curveball, the pitcher transfers arm energy into the spin by twisting his wrist as he releases the ball (imagine turning a doorknob with your thumb and first two fingers toward the batter).
This is what makes the curveball so deceptive...The batter uses the pitcher's arm to time his swing. If there's no change in arm-speed, the brain assumes no change in ball speed. This is why curve balls make hitters look so bad.
2006-08-13 06:48:19 · answer #1 · answered by a_man_could_stand 6 · 0⤊ 0⤋
Hi:
When a baseball pitcher throw a curve ball . The ball is thrown with a slight spin on it. This spin; pile air up on one side of the ball and slightly removes air on the other. This create a force on the ball, just like a airplane wing in motion which cause it to move from a straight path to a curve one . By controlling the amount of spin or direction of spin the pitcher and change it direction or the amount of curve up to a point . That is how a curve ball work
2006-08-13 06:28:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
iroc70 is pretty close. I don't think air has a tendency to pile up on the ball. However, the spin on th ball causes some aerodynamic effects. On one side of the spining ball the air velocity at the surface of the ball is ball velocity plus spin on the other it is minus spin. It doesn't move the ball very far, but the appearance is pretty dramatic.
A typical curve ball has the most movement if the spin is oreinted so as to produce a downward movement. Since the normal tajectory it is curving downward already the apparent movement is significant.
2006-08-13 06:52:49 · answer #3 · answered by Roadkill 6 · 0⤊ 0⤋
you mean projectiles? that is any ball thrown takes the path of a parabola?please be explicit.i am unable to understand you
2006-08-13 06:22:52 · answer #4 · answered by raj 7 · 0⤊ 0⤋
Take in consideration of center of mass and then apply laws of motion of projectile
2006-08-13 06:43:08 · answer #5 · answered by Sanjay 1 · 0⤊ 0⤋