PAP111_Lecture16 - Clicker Time Gravitation Law says 76 1 2...

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Clicker Time
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Gravitation Law says: 1 2 3 4 6% 3% 76% 15% 1. The force is proportional to the inverse of the distance, r . 2. It is proportional to m 2 . 3. Proportional to m and r -2 . 4. Universal constant G=g.
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The potential energy of the gravitational field 1 2 3 4 7% 14% 3% 76% 1. is always >=0. 2. is always <=0. 3. is g m Δz. 4. decreases with distance from the center.
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PAP 111  Mechanics and Relativity Lecture 16 Einstein’s Theory of Relativity Electromagnetism and Galilean Relativity Location of the Absolute Frame and Michelson-Morley  Experiment The Postulates of Special Relativity Simultaneity and Time Dilatation
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Galilean Relativity The  Principle of Galilean Relativity  states  that the laws of mechanics are the same in all  inertial frames of reference . That is, all mechanical laws such as Newton’s  laws, the laws of Conservation of Energy,  Conservation of Linear Momentum and  Conservation of Angular Momentum, are the  same in all inertial frames of reference.
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Important Conclusions from  Galilean Relativity There is no preferred inertial frame of reference for describing  the laws of mechanics. In other words, there is no way at all in  determining the  absolute  velocity of an inertial reference frame  from mechanical experiments. There is no physically definable  absolute rest frame. The laws of physics deduced from experiment carried out in a  vehicle moving with uniform velocity is identical to that inferred  from the same experiment performed in a stationary vehicle. This agreement implies that no mechanical experiment can  detect any difference between the two inertial frames. The only thing that can be detected is the relative motion of one  frame with respect to the other.
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Newtonian Relativity Newton believes in an absolute rest frame relative to which other inertial frames move with a uniform velocity. In other words, he believes that there is an absolute frame within the set of inertial reference frames. This is the absolute inertial frame he fixed with the distant stars, and represents an absolute space in his perspective. He arrives at this hypothesis by noticing that accelerated motion appears to be absolute. Newton wrote in his Mathematical Principles of Natural Philosophy : "Absolute space, insofar as its character is concerned, has nothing to do with any of the exterior conditions: it forever maintains regularity and sameliness."
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Newtonian Relativity versus  Galilean Relativity In Galilean relativity, none of the  inertial reference frames that move  uniformly relative to each other is  special: there is no absolute rest  frame in the set of inertial reference  frames. This is the key difference  between Galilean and Newtonian  relativity.
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Maxwell’s Equation Φ + = Φ - = = =
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