well..if you really want to give the topic poster some help, go ahead and start with the basic math for gravity and then the math for einstiens theory of relativity, and see if the initial poster got enough?
according to newtons law: (force)=inertial mass)x (acceleration),
the enertia massis a characteristic constant of the accellerated body. , if now gravitaiton is the cause of accelleration, we have
(force)=(gravitational mas)X (intensity of the gravitational field)
where thegravitational mass is likewise a characteristic constant for the body. from these two relations as follows:
.........................(gravitational mass)
(acceleration)= _____________________
..........................(inertial mass)
X (intensity of the gravitational field).
if now, as we find from experiance, the acceleration is to be independant of the nature and the condition of the body and always the same for a given gravitational field, then the ratio of the gravitational to the inertial mass must likewise be the same for all bodies. by a suitable choice of units we can thus make this ratio eaqual to unity.
we then have the following law:
the GRAVITATIONAL mass of a body is equal toits INERTIAL mass.
(from einstiens special theory of relativity part II)
hope that at least points you in the right direction mr poster, although..you might want to hit the library or take some book suggestions from above.
Edited by tesla, : elaborated
Edited by tesla, : fixes in typoing
Edited by tesla, : No reason given.