Question

Find the force of gravity between two physics students that have masses of 74.0 kg and 82.5 if they are sitting 0.95 m apart

Answer 1

The force of gravity is calculated by F = G*(m1*m2)/r^2. Here m1 = 74 kg, m2 = 82.5 kg and r = 0.95 m (and G is 6.674Ă—10â’11 m3â‹…kgâ’1â‹…sâ’2). Plug in and calculate: F = 6.674e-11 * (74*82.5)/(0.95^2) ~ 4.52 e-7 N = 45 µN Answer: the force is 45 µNewtons.