October 13, 2015

Homework Help: gr 11 physics

Posted by mat on Thursday, November 26, 2009 at 10:48pm.

as a rocket carrying a space probe acceleraes away from earth the fuel is being used up and the rocket's mass becomes less when teh mass of a rocket(and its fuel) is M and the distance of teh rocket from eart's centre is 1.5rE, the force of gravitational attraction between eartrh and rocket is F1, when some fruel is consumed causing teh mass to become 0.5M and the distance from Earth's centre is 2.5rE the new gravitational attraction is F2. Determine the ratio of F2 to F1. Tkhe symbalrE is earth's radius.

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