(adsbygoogle = window.adsbygoogle || []).push({}); coefficient of kinetic friction, URGENT need today

The system shown in the figure below has an acceleration of magnitude 0.51 m/s2, where m1 =

4.30 kg and m2 = 6.00 kg. Assume that the coefficient of kinetic

friction between block and incline is the same for both inclines.

Link to figure:

http://img9.imageshack.us/img9/3437/figureyh.jpg [Broken]

m1 is box on the left, m2 is box on the right. both angles are 35 degrees.

a) find the coefficient of kinetic friction

Here's what I tried:

coefficient of kinetic friction = (gsinΘ - a) / gcos Θ

and got .63668

when i input my answer in the system said "your answer differs from the correct answer by orders of magnitude."

b) find the tension in the string

T= m1a + m1gsinΘ

= 26.36 N

system said "your answer differs by 10% of correct answer..."

Please help. I need this by tonight. Thank you!!!

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# Homework Help: Coefficient of kinetic friction, need today

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