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physics

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The planetMars requires 2.35 years to orbit
the sun, which has a mass of 2 × 1030 kg, in
an almost circular trajectory.
Find the radius of the orbit of Mars as it
circles the sun. The gravitational constant is
6.672 × 10−11 N · m2/kg2 .
Answer in units of m

  • physics - ,

    forcegravity=centripetalforce
    GMs*M/r^2=M w^2r
    GMs/r^2=(2PI/period)^2 r
    change period fromyears to seconds, look up G, solve for r

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