Frictional Force on a Car in a Turn

r

50

θ

-0.04

v

60

m

1050

centripetal acceleration:

5.56 m/

2

s

force needed:

6.13×

6

10

N

minimal static frictioncoefficient:

0.57

A car of mass

m

making a turn on a curve of radius

r

with a velocity

v

experiences a centripetal acceleration

a

c

. In order to keep moving without skidding, a frictional force

f

s

needs to act toward the center of the curve, with a minimal value

μ

k

for the coefficient of static friction.