How Much Heat is Generated by a Brake Through Friction?

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The discussion focuses on calculating the heat generated by brake friction, emphasizing the relationship between friction, normal load, and the coefficient of friction. The coefficient of friction is assumed to be 0.8 for carbon fiber against a steel plate. Key equations include friction equating to normal load multiplied by the coefficient of friction, and work defined as force times distance. The area of contact is deemed irrelevant, while the distance is clarified as the product of radius, angular velocity, and time. Understanding these parameters is crucial for accurately determining the heat generated during braking.
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Homework Statement


I need to find out how much heat is generated by a brake.
I know heat generated = friction
The parameters that will affect it friction are
Normal load (I can choose depending on outcome)
Coefficient of friction (assumed 0.8 between carbon fiber and steel plate)
Area of contact (I can choose depending on outcome)


Homework Equations



I couldn't find relevant equations, which is why i need help in connecting the parameters

Friction = normal load x coefficient of friction ?
 
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Frictional force = normal load X coefficient of friction
Work = force X distance

Area of contact is not relevant

BTW: I'm guessing that it you took separated your work from the "problem statement" (per the homework form), you would have gotten more responses.
 
Thanks, so is the distance angular velocity x time?
Also, surely the force has to be subject to the coefficient of friction?..
 
Ziv7 said:
Thanks, so is the distance angular velocity x time?
Also, surely the force has to be subject to the coefficient of friction?..
The coefficient is part of the computation. You need it to compute the force.

Assuming a drum brake, distance is radius X angular velocity X time.
 
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