A car travels at 17 m/s without skidding around a 35 m radius unbanked curve. What is the minimum value of the static friction coefficient between the tires and the road?
A) 0.84
B) 0.050
C) 0.0014
D) 0.024

Question

Quizplus · Accepted Answer

We can use the formula for centripetal force to find the minimum coefficient of static friction:
Fc = (mv^2)/r = friction force = friction coefficient * weight
(mv^2)/r = μmg
μ = (mv^2)/(rg)
μ = (m(17 m/s)^2)/(35 m)(9.81 m/s^2) = 0.84
Therefore, the minimum coefficient of static friction is 0.84.

A Car Travels at 17 M/s Without Skidding Around a 35