Universal Gravitation Quiz

Which of the following formulas is the correct equation for the law of Universal gravitation?

What happens to Gravitational force if I double both of the masses but don't change their distance?

• doubles

• half as big

• 4 times bigger

Calculate the force of gravity (F) between two objects whose masses are m₁ = 100 kg and m₂ = 1000 kg if they are separared by a distance of d = 500 m.

• 2.67 * 10^-11 N

• 0.4 N

• 6.67 * 10^-11 N

• 1.3 * 10^-8 N

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

If I double the distance between two objects, what happens to their gravitational Force?

• 4x bigger

• 4x smaller

• 2x bigger

• 2x smaller

Answer explanation

2d²=4d

What happens to Gravitational force if I double both of the masses but don't change their distance?

• doubles

• half as big

• 4x bigger

• 4x smaller

Answer explanation

G(2m₁)(2m₂)=same as = 4(Gm₁m₂)=4F

Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?

• F/3d

• F/2d

• F/6d

• F/9d

Answer explanation

3d²=9d

How is the gravitational force between to objects related to their mass

• They are directly proportional

• They are inversely proportional

• They do not affect each other

• They are equal

If the distance between 2 masses is increased then the force of gravitation between them will...

• increase

• decrease

• stay the same

If the mass of either m₁ or m₂ is increased then the force of gravitation between them will...

• increase

• decrease

• stay the same