Posted by **jared** on Friday, February 19, 2010 at 12:15am.

A bike is hanging from a hook in a garage. Consider the following forces.

(a) The force of the Earth pulling down on the bike.

(b) The force of the bike pulling up on the Earth.

(c) The force of the hook pulling up on the bike.

(d) The force of the hook pulling down on the ceiling.

Which two forces are equal and opposite because of Newton's third law?

Which two forces are equal and opposite because of Newton's first law?

- physics -
**bobpursley**, Friday, February 19, 2010 at 12:16am
Do you have any thinking on this? the question is well stated.

- physics -
**jared**, Friday, February 19, 2010 at 1:32am
for Newton's third law: i believe it would be the force of the hook on the bike and force of the bike pulling on the earth

and for second law:force of earth pulling down on bike and force of hook pulling down on ceiling..but im not too sure?

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