As you start your car, you put your phone on the flat dashboard of your car....
As you start your car, you put your phone on the flat dashboard of your car. Your car accelerates constantly at 3.01 m/s^2 as you realize that your phone did not slide across the dashboard. Given that your phone has a mass of 134 g and the co-efficient of static friction between the phone and the dashboard is 0.51, calculate the magnitude of static friction force on your phone.
Homework Answers
the magnitude of static friction force on your phone is
fs = 
s x N
= s (m g)
= (0.51) (3.01) (9.8)
= 14.749 N
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