The magnitude of the gravitational force between two particles 0.10m apart is 10N. If the...

WAEC 2001

The magnitude of the gravitational force between two particles 0.10m apart is 10N. If the distance between them is increased to 0.20m, calculate the magnitude of the new force

A. 40.0N
B. 20.0N
C. 5.0N
D. 2.5N

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Correct Answer: Option D

Explanation

\(g_1 = \frac{Gm_1m_2}{r^2_1}\)

\(m_1m_2 = \frac{gr^2_1}{G}\)

\(g_2 = \frac{Ggr^2_1}{Gr^2_2} = \frac{10 \times 0.1^2}{0.2^2}\)

= 2.5N

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The magnitude of the gravitational force between two particles 0.10m apart is 10N. If the...

Correct Answer: Option D

Explanation

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