Answer to Question #262948 in Physics for Mae

Question

A physics major is cooking breakfast when she notices that the frictional force

between her steel spatula and Teflon frying pan is only 0.200 N. Knowing the

coefficient of kinetic friction between the two materials, she quickly calculates

the normal force. What is it?

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Answer 1

The normal force is

$$N=f/\mu_k=0.2/0.04=5\text{ N}.$$

According to the data found on the internet, the coefficient of kinetic friction between steel and Teflon is 0.04.