EASY
AS and A Level
IMPORTANT
Earn 100

Calculate the gravitational force of attraction between two objects separated by a distance of 1.0cm and each having a mass of 100 g.

Important Questions on Gravitational Fields

EASY
AS and A Level
IMPORTANT

Calculate the gravitational force of attraction between two asteroids separated by a distance of 4.0×109m and each having a mass of 5.0×1010kg  .

EASY
AS and A Level
IMPORTANT

Calculate the gravitational force of attraction between a satellite of mass 1.4 x104 kg orbiting the Earth at a distance of 6800 km from the Earth's centre. (The mass of the Earth is 6.0×1024kg).

EASY
AS and A Level
IMPORTANT
Estimate the gravitational force of attraction between two people sitting side by side on a park bench. How does this force compare with the gravitational force exerted on each of them by the Earth (in other words, their weight)?
MEDIUM
AS and A Level
IMPORTANT
Mount Everest is approximately 9.0 km high. Estimate how much less a mountaineer of mass 100 kg (including backpack) would weigh at its summit, compared to her weight at sea level. Would this difference be measurable with bathroom scales? 
EASY
AS and A Level
IMPORTANT

Calculate the gravitational field strength close to the surface of the Moon.

MEDIUM
AS and A Level
IMPORTANT

Calculate the gravitational field strength close to the surface of the Sun. 

EASY
AS and A Level
IMPORTANT
Suggest how your answers help to explain why the Moon has only a thin atmosphere, while the Sun has a dense atmosphere. 
EASY
AS and A Level
IMPORTANT

Calculate the Earth's gravitational field strength at the position of the Moon.