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Question
Two spherical balls of mass 10 kg each are placed 10 cm apart. Find the gravitational force of attraction between them.
Solution
The gravitational force of attraction between the balls is given as by
\[F = \frac{G m_1 m_2}{r^2}\]
\[\text { Given } : m_1 = m_2 = 10 kg \text { and } r = 10 cm = 0 . 10 m\]
\[\therefore F = \frac{6 . 67 \times {10}^{- 11} \times 10 \times 10}{\left( 0 . 1 \right)^2}\]
\[ \Rightarrow F = 6 . 67 \times {10}^{- 7} N\]
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