Question re: Newton's 3rd law

  • #26
Andrew Mason
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Another thing that is of course very non intuitive is the fact that even though the bowling ball is pulled down with a force that is some 1000 times greater than the force that pulls the pea, they STILL have the same acceleration! This is because 1000 times more massive bowling ball needs to be pulled by 1000 times larger force in order to have the same acceleration as the pea, which has a 1000 times smaller mass.
It seems that you and Robert agree on this. It is just that Robert would point out that since the force of the gravity is 1000 times greater with the ball, the earth acceleration toward the ball is 1000 times greater than its acceleration toward the pea. He acknowledges that the accelerations of the earth are immeasureably small in both cases.

AM
 

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