Thursday, 20 October 2011

Newton...you brainbox!

I studied physics for the leaving cert and when I was given the theme of Motion and Movement ,Newton laws of motion sprung to mind....



  • First law: The velocity of a body remains constant unless the body is acted upon by an external force.






  • Second law: The acceleration a of a body is parallel and directly proportional to the netforce F and inversely proportional to the mass m, i.e., F = ma.





  • Third law: The mutual forces of action and reaction between two bodies are equal, opposite and collinear. 

        
    I also love the idea of Newtons Cradle...it mesmerism me!
     
    The cradle in motion
    .I decided to create one that resembles the corporate business toy but not necessarily so polished...so i experimented with different materials and used bamboo sticks and hollow eggs and wire...making it more raw.




                                                                                                    
    I punctured two holes at either ends of each egg with a needle and blew though the top pushing the egg contents through the bottom into a bowl..making the egg hollow!


    I put some wire into the first and last egg to weight it down so when one at the end is lifted and released ,the resulting force travels through the line and pushes the last one upward.  





    I had to change the wire as it was too thin and wasn't sturdy enough to hold the eggs in a straight line...i also had to reinforce the bamboo sticks with nails at the base of the stand! 
    i drilled holes in the bamboo and insert a stronger wire.

    nails drilled through the base of the mdf wood.
    experimenting with different types of string...i liked the look of the thicker one but it was the thinner one which worked best..so i used that instead!
    The eggs worked well enough...surprisingly!I thought they would be too fragile to bounce off each other...I thought I would have to fill it with glue or make castings of the eggs instead. I expected them to crack at smash on impact but they did not!. You do,however, have to be quiet gentle with them! Maybe I will explore this more in the future and overcome this "problem"!!

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