Monday, March 9, 2015

newtonian gravity - Newton's Gravitation Force between two bodies



Theoretically, from Newton's equation for the force between two bodies if we take two ordinary rings in a distance there will be a force according to the square inverse law of their distance (from their mass center) such as case 1 from the below picture. If i place their mass center so as to coincide (case 2) the Force will be infinite, although they can separate from each other with a small force. What's wrong with that supposition?
enter image description here




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

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