What is mu in physics?

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Jan 26, 2016

Answer:

Mu (#mu#) is the co-efficent of friction and is a constant for any two materials in contact.

Explanation:

#mu=("force of limiting friction")/("normal force")#

where normal force = mg (mass x gravity) on a horizontal surface.*
The value for g is variously represented as #9.8 N/(kg), 9.81 N/(kg) # or # 10 N/(kg)#, depending on the text and curriculum.

*On an inclined plane, normal force is calculated using:
#F_N = m*g*cos(theta)#, where #theta# is the angle of the incline.

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