Two 40,000 kg spheres are separated by 1 m (measured from center to center). What is the gravitational force between them (measured in N)? Do not write the answer in scientific notation and round to two decimal places.

Question

Two 40,000 kg spheres are separated by 1 m (measured from center to center).  What is the gravitational force between them (measured in N)?  Do not write the answer in scientific notation and round to two decimal places.

isaiah.feynman · Answer

I think you need this. $$F=G \frac{ m_{1}m_{2} }{ r^{2} }$$

anonymous · Answer

Do you know what G is?

isaiah.feynman · Answer

The gravitational constant. I can't remember it. Look it up.

isaiah.feynman · Answer

$$G=6.67384 × 10^{-11} m^{3}  kg ^{-1} s ^{-2}$$

anonymous · Answer

Thank you. How would i determine the radius when is says that the spheres are seperated by a meter?

isaiah.feynman · Answer

1 meter. r squared = 1

anonymous · Answer

Thanks again

isaiah.feynman · Answer

In fact because of the nature of your problem that equation simplifies to..$$F=G2m$$