CH 06 HW Multiple Choice Question 6.23 ResourcesConstants « previous 8 of 23 nex

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CH 06 HW

Multiple Choice Question 6.23

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Multiple Choice Question 6.23

Wings on race cars push them into the track. The increased normal force makes large friction forces possible. At one Formula One racetrack, cars turn around a half-circle with diameter 190 m at 68 m/s .

Part A

For a 610 kg vehicle, the approximate minimum static friction force to complete this turn is

For a 610  vehicle, the approximate minimum static friction force to complete this turn is
a. 15000 N
b.24000 N
c.18000 N
d. 6000 N
e. 30000 N

Explanation / Answer

Given that
D = 190 m
R = 190/2 = 95 m

we know
F = m*V^2 / R

= 610*(68)^2 / 95

= 29,690 N

it is near by 30000 N

So ans. is (e)

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