First slide

Circular motion in horizontal plane

Question

A car is moving on a circular level road of radius of curvature 300m. If the coefficient of friction is 0.3 and acceleration due to gravity is 10m/s². The maximum speed the car can have is

Moderate

A

30km/h
B

81km/h
C

108km/h
D

162km/h

Solution

$f = {mrω}^{2}; μ_{s} N = \frac{{mv}^{2}}{r}$

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