1. ## more algebra

1)The gravitational force between two objects, F(N), is given by the formula
F = 6.67 × 10^−11m1m2/ r^ 2
where m1 and m2 are the mass (in kilograms) of each object and r (in metres) is the distance
between them.

A)The gravitational force between a planet and an object 6.4 × 106 m away from the
centre of the planet is found to be 2.4 × 104 N. If the object has a mass of 1500 kg,

2. The last sentence appears not to be complete...?

3. 1)The gravitational force between two objects, F(N), is given by the formula
F = 6.67 × 10^−11m1m2/ r^ 2
where m1 and m2 are the mass (in kilograms) of each object and r (in metres) is the distance
between them.

A)The gravitational force between a planet and an object 6.4 × 106 m away from the
centre of the planet is found to be 2.4 × 104 N. If the object has a mass of 1500 kg, calculate the approximate mass of the planet, giving the answer in standard form (two
significant figures).

4. Originally Posted by smmmc
1)The gravitational force between two objects, F(N), is given by the formula
F = 6.67 × 10^−11m1m2/ r^ 2
where m1 and m2 are the mass (in kilograms) of each object and r (in metres) is the distance
between them.

A)The gravitational force between a planet and an object 6.4 × 106 m away from the
centre of the planet is found to be 2.4 × 104 N. If the object has a mass of 1500 kg, calculate the approximate mass of the planet, giving the answer in standard form (two
significant figures).
Solve for $\displaystyle M$:

$\displaystyle 2.4 \times 10^4 = \frac{6.67 \times 10^{-11} \times 1500 \times M}{(6.4 \times 10^6)^2}$.