Changes
From Karnataka Open Educational Resources
808 bytes removed
, 20:42, 3 December 2013
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| | === 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 === |
| − | [[Image:gravity-force-lab-screenshot.png|Gravity Force Lab]]
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| − | {| border="1"
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| − | |Click to Run
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| − | |}
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| | [http://phet.colorado.edu/en/simulation/gravity-force-lab Click here for PhET simulation] | | [http://phet.colorado.edu/en/simulation/gravity-force-lab Click here for PhET simulation] |
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| | #[[Law of gravitation and relativity]] | | #[[Law of gravitation and relativity]] |
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| − | Newton's law has since been superseded by Einstein's theory of general relativity, but it continues to be used as it is, as an excellent approximation of the effects of gravity. Gravitational force acts at a distance. The properties of the space surrounding any massive body can be considered to be altered in such a way that another massive body in this region experiences a force. This alteration of space is a gravitational field. Einstein perceived a gravitational field as a geometrical warping of four dimensional space and time; masses “bend” the space around them. Gravity is the property of matter that possesses mass that causes a force of attraction to exist between any two particles in space.
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| | ===Activity No # === | | ===Activity No # === |
