Due in 13 hours, 2 minutes A car is traveling around a bend at a speed of 12.6 m

Question

Due in 13 hours, 2 minutes A car is traveling around a bend at a speed of 12.6 m/s. The bend has a radius of curvature of 71.3 m. What is the centripetal acceleration of the car? 2.23 m/s 2 You are correct. Your receipt no. is 160-8669 (2) Previous Tries Friction is the only force acting towards the center of the circle. If the mass of the car is 745 kg, what is the force of friction required to make the car go around the bend? Submit Answer Tries 0/10 Suppose the car travels twice as fast around the bend. What is the force of friction required to make the car go around the bend? Submit Answer Tries 0/10

Explanation / Answer

force of friction provides the necessary centripetal force

hence Ff = frictional force = centripetal fore = m ac

given that : m = 745 kg

ac = 2.23

Ff = 745 x 2.23 = 1661.4 N

v' = 2 x 12.6 = 25.2 m/s

Ff = m v'2 /r = (745) (25.2)2/(71.3) = 6635.41 N

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