PHY 101 Chapter Notes - Chapter 12: Hohmann Transfer Orbit, Roche Limit, Gravitational Lens
16 Nov 2016
School
Department
Course
Professor
Document Summary
Gravity- the weakest fundamental force of nature; it is responsible for the motion of the sun, moon, earth and planets. Newton"s law of universal gravitation: f= g(m1m2)/r; the force of gravity between any two point objects is mass m1 and m2 is attractive and of magnitude f given by the above equation. R is the distance between the masses, and g is the universal gravitation constant; g= 6. 67 * 10-11. Each mass experiences a force of the same magnitude but in opposite directions, the force between two objects forms an action reaction pair. According to newton"s law, all objects in the universe attract all other objects in the universe by way of gravitational interaction. In general, gravitational forces are only significant when large masses are involved. The force of gravity decreases with distance; f varies as 1/r2, it has an inverse square dependence on the distance.
