Pluto orbits the Sun at an average distance of 5.91 * 10^12 meters. Pluto's diameter is 2.30 * 10^6

meters and its mass is 1.31 * 10^22 kilograms.

Charon orbits Pluto with their centers separated by a distance of 1.96 * 10^7 meters. Charon has

a diameter of 1.21 * 10^6 meters and a mass of 1.55 * 10^21 kilograms.

Calculate the magnitude of the gravitational force of attraction that Pluto exerts on Charon. [Show all

work, including the equation and substitution with units.]

Unless I'm missing something, most of the values you are given seem to be irrelevant.

Based on Newton's law of universal gravitation, F=G (m1m2/r^2) where G is the gravitational constant, m1 and m2 are the 2 masses, and r^2 is the distance separating the centres of the 2 masses.

We can substitute the values in to get F=G ((1.31x10^22) * (1.55x10^21) / (1.96x10^7)

=3.53x10^18N

Therefore the magnitude of the gravitational force of attraction that Pluto exerts on Charon (and vice versa) is 3.53x10^18N