Calculating Static Friction and the Coefficient of Friction

AI Thread Summary
To calculate kinetic friction for a block sliding down a ramp, first clarify the acceleration context; it refers to the block's acceleration down the ramp, not gravitational acceleration. A free body diagram is essential to visualize forces acting on the block, including gravitational and frictional forces. The coefficient of friction can be determined using the formula involving normal force and frictional force. The discussion emphasizes the need for an initial attempt at solving the problem before further assistance is provided. Understanding these concepts is crucial for accurately calculating kinetic friction and the coefficient of friction.
KarleeZ
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*** Title says static - need kinetic friction!

Homework Statement



Find the amount of kinetic friction. A block with mass of 0.422kg slides down a ramp from rest. Given: acceleration = 1.58m/s^2, mass = 0.422kg, theta = 29.0°, velocity two (end): 1.7m/s, and total time is 1.10s. I also need to find the coefficient of friction.
 
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Start by drawing a free body diagram. When you say "acceleration = 1.58m/s^2", what is meant? Is that the acceleration of the block down the ramp, or the acceleration of the block due to gravity? (AKA where does the acceleration vector point).

That's the most I'm willing to help until I see some attempt at a solution.
 

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