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# A 600-kg car is going around a curve with a radius of 120 m that is banked at an

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9 years ago
 A 600-kg car is going around a curve with a radius of 120 m that is banked at an A 600-kg car is going around a curve with a radius of 120 m that is banked at an angle of 20° with a speed of 24.5 m/s. What is the minimum coefficient of static friction required for the car not to skid?A) 0.12B) 0.24C) 0.36D) 0.48E) 0.60 Read 7536 times 12 Replies
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robertlingrobertling
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9 years ago
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9 years ago
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9 years ago
 Quote from: Mizzy (9 years ago)can u please show how you got the answer?If a curve with a radius of 84.0m is perfectly banked for a car traveling 68.8km/hr, what is the minimum coefficient of static friction for a car not to skid when traveling at 92.2km/hr?Since friction is not required to provide the centripetal force for the car at 68.8km/h (the ideal speed)’ we can easily find the unknown banking angle. The normal force provides the centripetal acceleration; the horizontal component of the normal force is nsin$${\theta}$$, so:See attachment: Attached file Thumbnail(s): You must login or register to gain access to this attachment.
wskennedy,  Lylylulu02,
 - Master of Science in Biology- Bachelor of Science (Biology)- Bachelor of Education
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9 years ago
 The answer is 0.1235 or A. Post Merge: 9 years agoThe answer is 0.1235 or A.
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9 years ago
 Quote from: duddy (9 years ago)Quote from: Mizzy (9 years ago)can u please show how you got the answer?If a curve with a radius of 84.0m is perfectly banked for a car traveling 68.8km/hr, what is the minimum coefficient of static friction for a car not to skid when traveling at 92.2km/hr?Since friction is not required to provide the centripetal force for the car at 68.8km/h (the ideal speed)' we can easily find the unknown banking angle. The normal force provides the centripetal acceleration; the horizontal component of the normal force is nsin$${\theta}$$, so:See attachment:
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A year ago
 Thank you
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A year ago
 Thank you
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A year ago
 thank you
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A year ago
 thank you
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A month ago
 Thank you
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A month ago
 ThanksPost Merge: A month agothank you
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A month ago
 TY :)