# physic

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The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force SM that the sun exerts on the moon is perpendicular to the force EM that the earth exerts on the moon. The masses are: mass of sun = 1.99 1030 kg, mass of earth = 5.98 1024 kg, mass of moon = 7.35 1022 kg. The distances shown in the drawing are rSM = 1.50 1011 m and rEM = 3.85 108 m. Determine the magnitude of the net gravitational force on the moon.

• physic -

Perform a vector addition of the two perpendicular forces, to get the magnitude of the resultant. Use the Pythagorean theorem, since they are perpendicular. The individual forces due to Earth and sun can be computed using Newton's Universal law of Gravity, with which you should be familiar.

• physic -

sun------------moon
I
I
I
Earth

• physic -

gsftasfasf

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