A circular race track of radius 120 m is banked atan angle of 53^° . The optimum speed of car to avoidwear and tear of its tyres is (g = 10 ms-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 race track of radius 300 m is banked at an angle of 15 degrees. If the coefficient of friction between the wheels of a race car and the road is 0.2, what is the optimum speed of the race car to avoid wear and tear on its tires ?

Q. A circular race course track has a radius of 500 m and is banked to

10^{0}

. If the coefficient of friction between tyres of vehicle and the road surface is 0.25. Compute :
(a) the maximum speed to avoid slipping.
(b) the optimum speed to avoid wear and tear

Q. A circular racket of radius 300 m is backed at an angle of

15^{0}

. The coefficient of friction between the wheels of a race car and the road is 0.2. The optimum speed of the car to avoid wear and tear on its tyres is then
( Take tan

15^{0} = 0.27, g = 10 m s^{- 2}

)

Q. A circular road course track has a radius of

500 m

and is banked to

10^{\circ}

. If the coefficient of friction between the road and tyre is

0.25

, compute (i) the maximum speed to avoid slipping (ii) optimum speed to avoid wear and tear of the tyres. [Take

tan 10^{\circ} = 0.1763

]

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