Gravitational fields (AQA A-Level Physics): Quizzes

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Gravitational field strength
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What is a gravitational field?

A region where masses experience force

In a uniform gravitational field, how does the field strength vary?

It is constant everywhere

How are field lines represented in a uniform gravitational field?

Parallel, equally spaced lines

In a radial gravitational field, what happens to field strength as distance from the centre increases?

It decreases

Which law describes how gravitational force weakens with distance in a radial field?

Inverse-square law

What does gravitational field strength gg represent?

Force per unit mass

What are the units of gravitational field strength?

N/kgN/kg

What is the general formula for gravitational field strength?

g=Fmg = \frac{F}{m}

What is the formula for gravitational field strength in a radial field?

g=GMr2g = \frac{GM}{r^2}

What is the value of the gravitational constant GG?

6.674×10116.674 \times 10^{-11} Nm2/kg2Nm^2/kg^2

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