__G484 The Newtonian World__

This page includes links and instructions to complement unit G484 the Newtonian World.

Do not forget the items at the bottom, this is where documents are currently found.

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__Module 1: Newton’s laws and momentum__

Under construction

__Module 2: Circular motion and oscillations __

under construction

- http://www.physicsclassroom.com/class/circles/u6l4d.cfm - Information on weightlessness in orbit
- http://www.physicsforums.com/showthread.php?t=615606 - Discussion article on forces during space travel READ!!
__http://www.ndt-ed.org/GeneralResources/Formula/RTFormula/InverseSquare/InverseSquareLaw.htm__- Using the inverse square law to do calculations__http://www.williamcraigcook.com/satellite/launch.html__- Putting a satellite into orbit__http://www.n2yo.com/__- Tracking satellites__Planetary data__- Use this data to create a graph of T^{2}v R^{3}and therfore verify Keplers 3rd law__Keplers laws annimation____Keplers laws advanced____Take control of a satellite at the National schools observatory__

- You did some calculations on the decent of Felix Baumgartner. You worked out g at an altitude of 39km (where he jumped from) and then assuming this value remained constant and that there was zero air resistance you used kinematics to work out the time it took him to reach his maximum speed and how far he fell in this time. Check your calculations with the data that is available on his decent.
(for info and data if you can find it) or**Red Bull Stratos**(for the data)__Wikepedia__ - If anyone can find a complete set of data from the jump or a graph of velocity v time for the decent please let me know.

__Simple Harmonic Motion__

The key point is that a body is undergoing simple harmonic motion if it has an acceleration which is proportional to the negative displacement of the body from an equilibrium position.

This statement means the acceleration is always in the opposite direction to the displacement. This is due to the restoring force accelerating the object back to the equilibrium position. Remember the formula for acceleration of an object undergoing SHM as this includes the - sign which implies the definition. You need to give the equation and a written explanation in an exam.

Below are two links that can help with your understanding of the graphs you need to be able to construct and the accompanying equations you must be able to manipulate.

http://www.acoustics.salford.ac.uk/feschools/waves/shm.htm

For resonance and damping you need to be able to come up with examples of where resonance is useful and a nuisance. You should also be comfortable using graphs to demonstrate your understanding of resonance (Amplitude Vs Frequency) and damping (displacement vs time).

__Applications of resonance__

Useful: Radio receivers, MRI scans, Microwave ovens

Annoying and should be avoided: Tacoma Narrows, Car numberplate or other rattles, millennium bridge,

__Module 3: Thermal Physics__

Under construction

__General Revision__

This is where you edit the page and upload a link to a website explaining or demonstrating any of the concepts we have covered so far.

Please try and think about the whole circular motion topic not just satellites.

Thanks to the two of you who managed this. I will look into where the comments have gone that the rest of you have left. Can you please update your link like those below.

__Written By Jack Keeling__:__http://www.cyberphysics.co.uk/__This link I found has lots of useful information about all aspects of our course, in particular Circular Motion and Satellite, just select the relevant topic on the left drop down menus!__Written By Hamish Leith:____http://en.wikipedia.org/wiki/Kepler's_laws_of_planetary_motion__I know it's wikipedia but this made the most sense to me, guiding you through the equations pretty well.