a motorcar has a width 1.1m between wheels .its centre of gravity is 0.62m above the ground and the coefficient of friction between the wheels and the road is 1.9. what is the maximum possible speed to avoid overturning of car,if the centre of gravity inscribes a circle of radius 15m?(road surface is horizontal)(g=10m/s^{2

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Q. A circular racetrack of radius

300 m

is banked at angle of

15^{o}

If the coefficient of friction between the wheels of a race car and the road is

0.2

what is the (a) optimum speed of the race car to avoid wear and tear on its tyres and maximum permissible speed to avoid slipping?

A circular racetrack of radius $300 m$ is banked at an angle of $15^{o} .$ If the coefficient of friction between the wheels of a race car and the road is $0.2.$
(a) What is the optimum speed of the race car to avoid wear and tear on its tires?
(b) What is the maximum permissible speed to avoid slipping?