The adjacent image shows a bird\'s eye view of the curved junction between state

Question

The adjacent image shows a bird's eye view of the curved junction between state routes 92 and 20 at the exit off Cazenovia. Notice that the road curvature can be traced by a circular are of about 100-m radius. Say that you drive your 2000-kg car around the curve with a constant spend of 20 m/s (That is, about 45 mph). What is the force that the road must exert on your car to keep it on the arc? a) None, because the speed is constant, so the acceleration is zero. B) None, because the force that keeps you on the road is exerted by the engine. c) About 9800 newtons. d) About 8000 newtons. e) About 4 times 10^5 newtons.

Explanation / Answer

Centripetal Force on car = mv^2/r

= 2000*20*20/100

= 8000 N

option d is correct

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