Coefficient of Friction
Diane Rodriguez
Laura Bjork

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