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bd24
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Homework Statement
at a moment of total eclipse the moon lies in a straight line from the Earth to the sun. If your normal weight is 600N how much is your weight decreased by the combined pull of the sun and moon?
2. Homework Equations
Mass of sun - 2.0x10^30 kg distance from Earth - 1.5x10^8 km
mass of moon - 7.4x10^22 kg distance from Earth - 3.8x10^5 km
so i have calculated the gravitational pull from the sun and the moon on the person of weight 600N (w =mg , W/g = m = 61.22kg)
F = (G x 61.22kg x mass of moon) / distance from Earth to moon^2
added to
F = (G x 61.22kg x mass of sun) / distance from Earth to sun^2
= 3.63 x 10^-3 N
do i now just subtract this from the 600N to find my answer?
any help is appreciated