What is the magnitude of the net force keeping the sun moving on this path?
The sun has a mass of 1.99*10’30 kg, and is moving in a circular orbit around the center of our galaxy, the Milky way, dragging the rest of the solar system behing it. The radius of the orbit is 2.3*10’4 light years(1 ly=9.5*10’15)and the sun has an angular speed of 1.1*10′-15 rad/s. What is the magnitude of the net force keeping the sun moving on this path?
F = m w^2 R = 1.99*10^30*(1.1*10^-15)^2*2.3*9.5*10^19 =
= 5.26*10^20 N
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