EASY
AS and A Level
IMPORTANT
Earn 100
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)?
Important Questions on Gravitational Fields
MEDIUM
AS and A Level
IMPORTANT
Mount Everest is approximately high. Estimate how much less a mountaineer of mass (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.
MEDIUM
AS and A Level
IMPORTANT
Calculate the force the Earth exerts on the Moon. Hence, determine the Moon's acceleration towards the Earth.
MEDIUM
AS and A Level
IMPORTANT
Jupiter's mass is times that of the Earth and its radius is times the Earth's. The Earth's surface gravitational field strength is. Calculate the gravitational field strength close to the surface of Jupiter.
EASY
AS and A Level
IMPORTANT
The Moon and the Sun both contribute to the tides on the Earth's oceans. Which has a bigger pull on each kilogram of seawater, the Sun or the Moon?
