A man and his friend have masses 70kg and 60kg respectively. If they are seated...

WAEC 2016

A man and his friend have masses 70kg and 60kg respectively. If they are seated 1.0m apart, calculate the gravitational force of attraction between them. (G = 6.67 x 10^-11 Nm² kg^-2)

A. 1.59 x 10^-14 N
B. 2.80 x 10^-7 N
C. 1.30 x 10^-2 N
D. 6.30 x 10¹³ N

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Correct Answer: Option B

Explanation

F = \(\frac{GM_1M_}{r^2}\)

= \(\6.67 \times 10^{-11} \times 70 \times 60}{1^2}\)

= 2.8014 x 10^-7 N

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A man and his friend have masses 70kg and 60kg respectively. If they are seated...

Correct Answer: Option B

Explanation

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