Acceleration on a ramp with coefficient of friction

AI Thread Summary
The discussion focuses on calculating the acceleration of a 25kg block sliding down a 30-degree ramp with a coefficient of friction of 0.3, resulting in an acceleration of 2.4 m/s². Participants emphasize the importance of using a free body diagram to analyze the forces acting on the block, including the normal force and friction. The force of friction is calculated by multiplying the coefficient of friction by the normal force. One user initially struggles with applying the coefficient of friction but ultimately resolves the issue. The conversation highlights the relevance of proper force analysis in physics problems involving inclined planes.
reganw
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What is the acceleration of a 25kg block sliding down a ramp at 30 degrees to the horizontal, if the coefficient of friction is 0.3?

ans= 2.4m/s2


I haven't done this in a while.. I can't remember how to apply the coefficient of friction..

Thank you!

PLEASE DISREGARD.. I've figured it out now
 
Last edited:
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Did you make a free body diagram? Choose your axes along the incline and perpendicular to it. The forced perpendicular must balance.

The force of friction = the coefficient of friction times the normal force.
 
Berko said:
Did you make a free body diagram? Choose your axes along the incline and perpendicular to it. The forced perpendicular must balance.

The force of friction = the coefficient of friction times the normal force.

I did make the free body diagram.. but I get to the end and find the acceleration and still haven't applied the coefficient of friction because I haven't used the equation for Force of friction..
 
Nevermind, I've figured it out now.. thank you
 
Last edited:

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