Question on: WAEC Physics - 1991
Two objects of masses 80kg and 50kg are separated by a distance of 0.2m. If the gravitational constant is 6.6 x 10-11Nm kg, calculate the gravitational attraction between them.
A
4.9 x 10-9N
B
1.3 x 10-6N
C
6.6 x 10-8N
D
6.6 x 10-6N
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Correct Option: D
F = (\frac{Gm_1m_2}{r^2} = \frac{6.6 \times 10^{-11} \times 80 \times 50}{0.2 \times 0.2})
= 6.6 x 10-6N
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