- #1
Spartan Erik
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Homework Statement
"A block that weighs 50N is initially at rest on a rough horizontal surface. A 20N horizontal force is then applied to the block. If the coefficients of friction (static = 0.6, kinetic = 0.3), what is the magnitude of the frictional force on the block?"
Homework Equations
Frictional force = coefficient of kinetic friction x normal force
Max static frictional force = coefficient of static friction x normal force
The Attempt at a Solution
Once again I'm worried this problem is misleadingly easy:
Max static frictional force = coefficient of static friction x normal force
Max static frictional force = 0.6 x (50N - 20N)
Max static frictional force = 0.6 x 30N
Max static frictional force = 18N
Is this method correct?