Question

The planet mars has two moons, deimos and phobos. phobos is about 9,000 km from mars and is about six times more massive than deimos. deimos is about 23,000 km from mars. upon which moon does mars exert a stronger gravitational force?not enough informationphobosdeimos and phobos equallydeimos

Answer 1

F = G(m1 m2)/(r)^2

Let m1 be the mass of Mars
Let m2 be the mass of Deimos.
Therefore, 6m2 is the mass of Phobos.

We know that G, m1, and m2 are just constants.

Phobos:

Fp = G(m1 * 6m2)/(9000000m)^2 = 7 × 10^(-14) * G m1 m2

Deimos

Fd = G(m1 * m2)/(23000000m)^2 = 2 × 10^(-15) * G m1 m2

Mars exerts a stronger gravitational force on Phobos since Fp > Fd