Aplanet has two moons with identical mass. moon 1 is in a circular orbit of radius r. moon 2 is in a circular orbit of radius 2r. the magnitude of the gravitational force exerted by the planet on moon 2 is which of the following compared with the gravitational force exerted by the planet on moon 1?
half as largetwice as largeone-fourth as largefour times as largethe same

Half as large.

Explanation:

Using Newton's law of universal gravitation, if the mass of the planet is M and of the Moons 1 and 2 is m, them the force exerted by the planet on them will be:

Which clearly shows that the force that the planet exerts on the Moon 2 is half  the force it exerts on the Moon 1.

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

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