Day 29: Parallel and Normal Force

We got out the 2 axis force plate to take on this free body diagram:

Screen Shot 2013 10 14 at 11 31 57 PM

Many students wanted to say that the normal force was equal to the gravitational force. It was pretty easy to put a bloc loaded with bricks on the plate, attach a string and pull diagonally upward with a spring scale, and we could easily see the normal and frictional force changes as the student pulled harder on the scale.

Screen Shot 2013 10 02 at 9 22 09 PM

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About John Burk

The ramblings of a physics teacher.
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