Given that the gravitational constant is 7 X 10 -11 Nm2kg -2 , what is
PHYSICSWAEC 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
Correct Answer: C. 7x10-2N
Explanation
F =
Gm1m2r2
=7 x 10-11 x 106 x 1031m
= 7 x 10-2Post an Explanation Or Report an Error
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