PAP111_Lecture16

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

• Notes
• 27

This preview shows pages 1–10. Sign up to view the full content.

Clicker Time

This preview has intentionally blurred sections. Sign up to view the full version.

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.
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.

This preview has intentionally blurred sections. Sign up to view the full version.

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
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.

This preview has intentionally blurred sections. Sign up to view the full version.

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.
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."

This preview has intentionally blurred sections. Sign up to view the full version.

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.
Maxwell’s Equation Φ + = Φ - = = =

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.
• Fall '10
• Claus-DieterOhl
• Special Relativity, Frame of reference, Inertial frame of reference, ether frame, absolute rest frame

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern