PHYS 1003 Lecture Notes - Lecture 8: Gravitational Constant, Glossary Of Riemannian And Metric Geometry, Electric Field
17 Oct 2016
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Document Summary
The magnitude of the gravitational between two objects is small, unless the mass of at r2 least one object is very large (ie. earth) Universal gravitational constant g = 6. 674 x 10^-11 n. m^2/kg^2. This applies for objects less than 160 km from the surface of the earth. At higher altitudes, an exact calculation is needed. Einstein produced a new physical model in his gtor. Instead of describing gravity as a force with comes from matter, he describes space-time as being distorted by the presence of matter. Light itself can be bent by the effects of space time curvature (it can be bent) Energy is a scalar property of an object or collection of objects. It represents the state or condition of the object. There are many types of energy, which can be converted from one form to another. The total energy of the universe is a constant this is known as the principle of energy.
