Question
7. An early objection to the idea that the earth is spinning on its axis was that the earth would turn so fast at the equator that people would be thrown into space.
Show the error in this logic by calculating the centripetal force needed to hold a 100. kg person in place at the equator. The radius of the earth is about 6400 km. Compare this force with the force of gravity of the 100. kg person.
So I know r=6,400,000 m and m=100. kg. I think F(centripetal)=(m*v)/r. How do I solve this?
Show the error in this logic by calculating the centripetal force needed to hold a 100. kg person in place at the equator. The radius of the earth is about 6400 km. Compare this force with the force of gravity of the 100. kg person.
So I know r=6,400,000 m and m=100. kg. I think F(centripetal)=(m*v)/r. How do I solve this?
Answers
ethan
3.4N