What is the size of the gravitational force acting on the earth due to the sun?
What is the size of the gravitational force acting on the earth due to the sun? Consider the earth following its nearly circular orbit about the sun. The earth has mass earth = 5.98*10^24 kg and the sun has mass sun = 1.99*10^30 kg. They are separated, center to center, by r = 93 million miles = 150million km.
the answer has to in Newtons. teacher is not good. do not no were to start.
G=newtonian gravitational constant = 6.67z10^(-11) in MKS units
M=mass of sun
m=mass of earth
F=6.67x10^(-11)(1.99x10^30 kg)(5.98x10^24kg)/(1.5x10^11 m)^2
F=7.94x10^44/2.25x10^22 = 3.53x10^22N