Friday

April 25, 2014

April 25, 2014

Posted by **Tina** on Friday, May 25, 2012 at 10:12pm.

- Physics -
**drwls**, Saturday, May 26, 2012 at 2:15amYou are being given more information than needed to answer the question. The roof length and roof edge height do not matter.

The net accelerating force is

M*a = 3.9 m/s^2 *M

= Mgsin41 - Mgcos41*U

Santa's mass M cancels out. Solve for the friction coefficient U.

3.9 = 6.43 - 7.40 U

7.40 U = 2.53

U = 0.34

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