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Line 32: − '''Newton's law of universal gravitation''' − − Newton's law of universal gravitation states that every particle in the universe attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them. This force acts along the line joining the two particles. − − Separately it was shown that large spherically symmetrical masses attract and are attracted as if all their mass were concentrated at their centres. − − For non-symmetric objects, the masses will be concentrated a the centre of mass and the distance between these centres is what will be taken as the distance − − − [[Image:Gravitation%20for%20wiki_html_39d0b1a1.png]] <br> − − F = G m1m2 / r2 − − * F is the force between the masses, − * m1 is the first mass, − * m2 is the second mass, − * G is the gravitational constant − * r is the distance between the masses − − In SI units, Force, F is measured in newtons (N), masses m1 and m2 are measured in kilograms (kg), and the distance between the masses is measured in metres. − <br><br>
Universal Law of Gravitation (view source)
Revision as of 19:56, 3 December 2013
, 19:56, 3 December 2013no edit summary
= Teaching Outlines =
= Teaching Outlines =
=== Activity 1 Use the following simulation for a demonstration of the gravitational force ===
=== Activity 1 Use the following simulation for a demonstration of the gravitational force ===