Homework Help: Physics

Posted by Max on Monday, February 15, 2010 at 10:32am.

A bike is hanging from a hook in a garage. You need to 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?
I would like to say A and C for the first question and B and D for the second one but I;m not sure

Physics - drwls, Monday, February 15, 2010 at 11:29am
a = -b because of Newton's third law.

-c -d = 0 , and therefore -c = d,
because the hook does not move. You could say that is a result of Newton's first law
Physics - Max, Monday, February 15, 2010 at 6:31pm
the newtons first law one was wrong so I'm not sure what it would rather be
Physics - Max, Monday, February 15, 2010 at 6:40pm
the newtons first law one was wrong so I'm not sure what it would rather be

Answer this Question

Related Questions

Physics - A bike is hanging from a hook in a garage. You need to consider the ...
physics - A bike is hanging from a hook in a garage. Consider the following ...
physics - there are 3 parts to my question. i need help on the last part. 1.a. A...
Calc-Based Physics - Two people are pulling a mule. One is pulling at 120 N* at ...
physics - The forces acting on the arm of a person lifting a dumbbell. The force...
physics - an 6lb object is hanging from a 10lb object which in turn is hanging ...
physics - Which of the following correctly describe the gravitational attraction...
Physics - A mass is hanging on the end of a spring and oscillating up and down. ...
physics - If you are holding a dumbbell in your hand, there are three forces ...
physics - I need some help and I was wondering if you guys could give me some ...

For Further Reading

First Name:
School Subject:
Answer: