Newton’s law (AQA A-Level Physics): Quizzes

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Newton’s law
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What is the nature of gravitational force between two masses?

Always attractive

How does gravitational force differ from electric force?

Gravity only attracts; electric can repel

How does gravitational force depend on the masses of two objects?

Proportional to product of masses

If the distance between two masses doubles, what happens to the gravitational force?

Becomes one-fourth as strong

If the distance between two masses triples, what happens to the gravitational force?

Becomes one-ninth as strong

What is the value of the gravitational constant GG?

6.674×10−116.674 \times 10^{-11} Nm2^2/kg2^2

In F=G⋅m1⋅m2r2F = \frac{G \cdot m_1 \cdot m_2}{r^2}, what does rr represent?

Distance between centres of masses

What is true about the mutual gravitational forces between two objects?

Equal magnitude, opposite direction

In what direction does gravitational force point?

Towards centre of each mass

Which is an application of Newton's law of gravitation?

Understanding orbits

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