Given that the gravitational constant is 7 X 10-11 Nm2kg-2, what is the force of...

WAEC 1990

Given that the gravitational constant is 7 X 10^-11 Nm2kg^-2, what is the force of attraction between 10⁶kg mass of lead hanging one metre away from a 10³kg mass of iron?

A. 7 x10^-20N
B. 7 x 10^-5N
C. 7x10^-2N
D. 7x10³N
E. 7x10⁰N

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Correct Answer: Option C

Explanation

F =

Gm₁m₂/r²

7 x 10^-11 x 10⁶ x 10³/1m

= 7 x 10^-2

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Given that the gravitational constant is 7 X 10-11 Nm2kg-2, what is the force of...

Correct Answer: Option C

Explanation

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