PhysicsPlease check
posted by Annie .
Which of the following confirms that gravitational mass and inertial mass are equal? I posted this about three hours ago and no one answered it so I'm hoping someone can look at my answer and direct me
1.Freefall accleration is the same throughout the universe
2.Free fall acceleration is the same at all points where the gravitational field stength is the same
3.Newton's second llaw is valid throughout the universe
4.An objects's weight can change with location but the object's mass remains constant.
Thank you for any helpI'm really confused on this question. I'm thinking its number 4 because I don't think the two freefall answers it

1. is not true
3. has nothing to do wth gravity
4. is true but says nothing about equality of inertial and graviational mass
That leaves 2.
What was your answer? 
I said number 4 so I was wrong
Thank you for explaining it and not thinking I'm a complete dope 
You made a good attempt. It was not a wellposed question. The equality of gravitational and inertial mass was a problem that bothered Einstein and led him to the Principle of Equivalence and the General Theory of Relativity.
He formulated it as follows:
The laws of physics are the same in a zerogravity field as in an accelerating freefalling coordinate system WITH gravity.
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Which of the following confirms that gravitational mass and inertial mass are equal?