Brick on a Plank

lhtran23 · #1 May 7, 2008, 03:59 PM

A 2kg brick sits on a plank. The friction coefficient between them is u=0.8. What is the value of the friction force if you tilt the plank at 30 degrees with respect to the horizontal? How does the answer change if you tilt it at 45 degrees?

ebaines · May 8, 2008, 05:06 AM

We'll be glad to help you with this, but only if you first attempt to solve it on your own. What methods have you tried? Where did you get stuck? Show some effort, and I'm sure someone will help you out.



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