A 100 N box sits on a 30 degree incline. If the static coefficient of friction...
A 100 N box sits on a 30 degree incline. If the static coefficient of friction is 0.1, what is the magnitude of the static frictional force acting on the box?
Select one:
a. 5.0 N
b. 8.7 N
c. 10N
Homework Answers
From FBD, Using Force balance along the incline:
Ff = us*N
Ff = us*W*cos A
Using given values:
Ff = 0.1*100**cos 30 deg
Ff = 8.66 N = 8.7 N
Correct option is B.
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