Compute the gravitational force of attraction between two balls each weighing 10 kg when placed at a distance of 1 metre apart.
Correct answer: E. 667.3 x 10^-11 N
- A. 66 x 10 -2 N
- B. 77 x 10 -7 N
- C. 81.9 x 10 -7 N
- D. 31.4 x 10^-6 N
- E. 667.3 x 10^-11 N
Explanation
According to gravitational law: F= G m1m2/ r2 F = (6.674x 10^-11)(10)(10)(1)2 F = 667.4x 10^-11 N Option E is correct. As this question is theroretical options A, B, C and D are incorrect.
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