Question

For two objects with masses 100kg and 500 kg to be 20 meters apart, find the gravity between them.

You can find their answers from the textbook (no need to turn in) 2) Turn in homework (Show Work, due to be announced): A 1000-kg car moves as speed from 10 m/s to 30 m/s in 20 seconds. What is the average speed? What is the acceleration? What is the average force acting upon it? If the car turns along a circle at speed 5 m/s around a curve 30 meters in radius, how big the centripetal force is needed? 1. 2. For two objects with masses 100 kg and 500 kg to be 20 meters apart, find the gravity between them.

Answer 1

Gravitational force between (gravity) F = G m_1 m_2/r^2 where m_1 = 100 kg m_2 = 500 kg r = separation distance = 20 m g = constant = 6.67 times 10^- 11 m^3/kg s^2 Because F = (6.67 times 10^- 11) (100) (500)/(20)^2 F = 8.34 times 10^- 9 N