What will be the gravitational force of attraction between two balls each weighing 5 kg when placed at a distance of 0.33 m apart. (G = 6.673 x 10^-11 Nm2/kg2 )
Correct answer: E. 1.5 x 10^-8 N
- A. 9.1 x 10^-8 N
- B. 7.1 x 10^-8 N
- C. 6.1 x 10^-8 N
- D. 3.5 x 10^-8 N
- E. 1.5 x 10^-8 N
Explanation
Given: m1=5kg m2=5kg r=0.33m G=6.673×10-11 Nm2/kg2 Formula: FG=Gm1m2/r2 FG=(6.673×10-11)(5)(5)/0.332 = 1.5×10-8N
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About Gravitation
Newton’s law of universal gravitation relates the force between masses to their masses and separation, while gravitational field strength explains weight and orbital motion. The topic covers satellite velocity and period, escape ideas, weightlessness in free fall, and artificial gravity, which differs from ordinary gravitational attraction.
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