Newton's Cannon

Like most of the classical scientists, Sir Isacc Newton was a dreamer too. Some of his dreams led to the amazing discoveries that he is famous for and laid the foundation for theories, most of which stood the test of time for well over three centuries.

Newton' Cannon, came about as a result of once such dream, a thought experiment - to be precise: Sir Isaac dreamed of the path of a cannon ball in the event of it being horizontally fired by a cannon at the top of a high mountain.

Had it not for the gravitational pull by the Earth, Newton argued, the cannon would have moved horizontally along a tangential path. Since the gravitational pull exists, he imagined the cannon ball approaching the surface of the Earth - at relatively low speed.

If the speed is high enough, Newton said, the cannon ball would orbit the Earth exactly like our moon.

Please make sure you change the speed before firing the cannon ball.

Newton Cannon

Speed

 

Newton outlined his thoughts in a booklet called, A Treatise of the System of the World. What Newton envisioned in this thought experiment is as follows:

Newton cannon ball

 

 

 

 

Resources at Fingertips

This is a vast collection of tutorials, covering the syllabuses of GCSE, iGCSE, A-level and even at undergraduate level. They are organized according to these specific levels.
The most popular tutorial is the Book of Electricity, which comes at the top of Google search for electricity tutorials for GCSE / AS/ A-Level at present.
In addition, there are a few more which come at the top of Google search.They are all supported by an extensive collection of animations and interactive labs.

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Recommended Reading

 

The best book for both teachers and students to learn physics - exactly like in good old days:concepts are clearly explained in detail;no meaningless cartoons to devour space;the author rendered a great service in his unique approach for generations of students, with this being the fourth edition.

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