Homework Help: Physics

Posted by Nick on Monday, December 15, 2008 at 10:20pm.

mass of star = 3.80 x 1030 kilograms
mass of planet = 6.35 x 1024 kilograms
mass of moon = 7.63 x 1022 kilograms
average distance from star to planet = 1.56 x 1011 meters
average distance from planet to moon = 4.26 x 108 meters

Use the data above to determine the net force exerted on the moon by the planet and the star during:
a. a solar eclipse.
.
b. a lunar eclipse.

Physics - Damon, Tuesday, December 16, 2008 at 3:54am
F = G M m /d^2

in solar eclipse distance moon is between planet and sun so planet pulls one way, sun pulls the other way on the moon

in lunar eclipse moon is on other side of planet from sun so both planet and sun pull the same way on the moon

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