Question
A car travels around a circular turn of radius 50 meters while maintaining a constant speed of 15 m/s.
Find the minimum value for the coefficient of friction necessary to keep the car on the road.
I got .40 for the minimum value of friction.
In icy conditions, the coefficient of friction drops to 0.15. Now find the maximum safe speed for making the turn.
I got 8 m/s
Are these right?
Find the minimum value for the coefficient of friction necessary to keep the car on the road.
I got .40 for the minimum value of friction.
In icy conditions, the coefficient of friction drops to 0.15. Now find the maximum safe speed for making the turn.
I got 8 m/s
Are these right?
Answers
centripetal force=mv^2/r
friction force=centripetal force
mg*mu= mv^2/r
mu=v^2/(rg)
b. again, friction force=centripetal force
mg*mu=mv^2/r
v^2=rg*mu
solve for v
friction force=centripetal force
mg*mu= mv^2/r
mu=v^2/(rg)
b. again, friction force=centripetal force
mg*mu=mv^2/r
v^2=rg*mu
solve for v
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