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A car travels at a speed of 24 m/s around a curve of radius 57 m. The acceleration of gravity is 9.8 m/s^2 .
1) What is the net centripetal force needed to keep the car from skidding sideways?
2) Were there no friction between the car's tires and the road, what centripetal force could be provided just by the banking of the road?
3) Now suppose the friction force is sufficient to keep the car from skidding. Calculate the magnitude of the normal force exerted on the car by the road's surface.
4) Calculate the magnitude of the friction force.
5) Calculate the lowest possible value of the static friction coefficient that would prevent the car from skidding.
the two stars in a binary star system have masses 1.7 x 10 ^ 30 kg and 5.8 x 10 ^ 30kg. They are separated by 2.1 x 10 ^ 12m, What is the speed of the heaviest star
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Now assume that a strong, uniform magnetic field of size 0.55 T pointing straight down is applied. What is the size of the magnetic force on the wire
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A glass window pane is exactly 20 cm by 36 cm at 10oC. By how much has its area increased as it temperature is 33oC, assuming that it can expand freely? Take the coefficient of thermal expansion for the glass to be exactly 9 x 10-6/Co.
A street lamp weighs 160 Newton. It is supported by two wires that form an angle of 100 degree with each other. Evaluate the tension in each wire supporting the street lamp
An electric motor rotating a workshop grinding wheel at a rate of 98 rev/min is switched off. Find how long does it take for the grinding wheel to stop
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