Calculate the centripital force exerted on the Earth by the Sun. Assume that the period of one revolution is 365.25 days. The average distance is 1.5X10^8 km and the Earth's mass is 6X10^24 kg.(adsbygoogle = window.adsbygoogle || []).push({});

ok so first I turned the time into seconds. Then I tried to find the velocity of the Earth using the equation:

Vt=2piR/T

so that became:

Vt=2pi(1.5X10^8km)/(31557600sec)

so the velocity was 29.86531 m/s

I then plugged it into the equation

Fcep=mVt^2/r

so F=(6X10^24)(29.86531)^2/(1.5X10^8)

F=3.5677X10^19

apparently that was the wrong answer. I was hoping that someone could see what I did wrong and help me out.

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# Homework Help: Centripital Force of the Earth

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