String Swing

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Frequently Asked Questions...

Physics free body diagram help?

What would the free body diagrams look like for.
1. A ball on a string swinging in circles on a horizontal surface
2. A ball on a string swung in circles in a horizontal plane in mid-air such that the plane of the circle is below the end of the string held at the centre of the circle.

not too sure. :/ help would be appreciated


Best Answer...

Answer:

http://i.imgur.com/kjpoN.png
Here's what I came up with (see link above), assuming the set-ups are what you described. T = the tension in the string, and G = gravitational force, m*g. In case 2, the y-component of the tension, Ty = G.