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5 answers

the perfect example is a ball.
a cue ball a foot balal. it can either be struck and follow a straight path without rotating,
bend with angular velocity
top spin it bounches and accelarates
back spin it "stays" resist it momentum

give it a though;)

2006-09-19 02:08:45 · answer #1 · answered by Emmanuel P 3 · 0 0

Imagine something long and skinny, like a board, in which you are going to apply a force. If you applied the force out toward the extremity of the board you are more likely to induce a rotation then if you had applied the force near the objects center of mass.

2006-09-19 09:09:14 · answer #2 · answered by bruinfan 7 · 0 0

consider a point object placed at x,y,z position on 3 dimensional space. Now it is on the direction in which thge force acts.
The general equation of a force is x I + y J + z K where I,J,K are unit vectors along the co-ordinate axes.

2006-09-19 09:12:25 · answer #3 · answered by Wolverine 3 · 0 0

The spin of a snooker or billiard ball depends on the spot where you hit the ball.

2006-09-19 09:09:00 · answer #4 · answered by mitch_online_nl 3 · 0 0

If you hit someone quite hard on the ankle they will probably fall over, whereas a similar blow to the hand is unlikely to do this (unless it's extremely hard)

2006-09-19 09:09:19 · answer #5 · answered by jay58 1 · 0 0

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