Thursday, November 10, 2011

Solution to challenge problem from the other day

The other day I put a challenge problem on the board.

You had a box on a 30 degree incline that started at v0=0 and then reached v=8m/s after t=2 sec. You had to find the coefficient of friction.

Here is the solution. Notice how I did not plug any numbers in until the last minute and that the mass cancelled out.

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