Knowing the coefficient of kinetic friction between the two materials (0.03), he quickly calculates the normal force. What is it (in N)?

Question

A physics major is cooking breakfast when he notices that the frictional force between the steel spatula and the Oiled Steel frying pan is only 0.450 N.

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Answer 1 · 2017-04-30T08:39:22

The equation for the force of friction is F $f$ = $u$ FN

$u$ stands for coefficient of friction, which in this case is 0.03.

FN is the force normal

Using the equation,

$0.450 = 0.03Fn$

$Fn = 0.450/0.03$

The force normal is therefore $15N$