Homework Help: Coefficient of Static Friction Problem

1. Dec 2, 2007

zjm7290

[SOLVED] Coefficient of Static Friction Problem

1. The problem statement, all variables and given/known data
A baseball player with mass m = 73 kg, sliding into second base, is retarded by a frictional force of magnitude 460 N. What is the coefficient of kinetic friction µk between the player and the ground?

2. Relevant equations
force of kinetic friction
f(k)=$$\mu$$(k) N

3. The attempt at a solution
This is a homework question given by our teacher during finals week, however he failed to go over this subject this semester and I do not have any references in my notes. The book I am using (College Pysics, 2nd ed., Giambattista) goes over this subject but is very unclear on how to solve this type of problem. Any help will be appreciated, thanks!
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2. Dec 2, 2007

Joshrk22

Frictional force = coefficient of friction * normal force
Fn = mg = 73 * 9.8 = 715.4 N
Ff = 460 N
460 N = uk * 715.4 N

uk = .64

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