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ubermierski ubermierski
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9 years ago
A 600-kg car traveling at 24.5 m/s is going around a curve having a radius of 120
m that is banked at an angle of 20°.

 
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wrote...
Staff Member
Educator
9 years ago
Lat. Accel. = V^2 / r = 24.5^2 / 120 = 5.0 m/s/s
Lat Force = 600 * 5 = 3000 N

Forces Relative to Vehicle:
Lateral = COS 20 * 3000 N + SIN 20 * 6000 N = 2819 + 2052 = 4871 N
Verticle = SIN 20 * 3000 N + COS 20 * 6000 N = 1026 + 5638 = 6664 N

a) Lateral G's is reduced from .5g to .46g (answer NO, Speed should be reduced from 54 to 40 MPH)

b) 4871 / 6664 = .73 coef friction
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