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Coefficient of Friction
Diane Rodriguez
Laura Bjork
Picture
The Coefficient of Friction
Friction is a force that opposes motion or that goes in the opposite direction of the other.
The more diverse each ducks� weight is, the more you can feel the difference of friction. A high coefficient means that the two materials don�t slide together easily.
 
M stands for the coefficient of kinetic friction
 
R stands for the normal force acting between the constant and the object; this is the objects weight
 
 
Rubber:
 
M= .7
Weight= 107.8 ounces = .306kg
R=.306 x 9.81= 3.00 Newtons
F= .7 x 3.00= 2.10 Newtons
 
Cardboard:
 
M= .5
Weight= 15 ounces = .42kg
R= .42 x 9.81= 4.12 Newtons
F= .5 x 4.12 = 2.06 Newtons
 
Wood:
 
M= .7
Weight= 11.9 ounces = .33kg
R= .33kg x 9.81 = 3.23 Newtons
F= .7 x 3.23 = 2.27 Newtons
 
Steel:
 
M= .1
Weight= 114.4 ounces = .320kg
R= .320 x 9.81 = 3.14 Newtons
F= .1 x 3.14 = .314 Newtons

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