Answer Happy

(7%) Problem 16: Consider a car heading down a 5.5° slope (one that makes an angle of 5.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the coefficient of static friction is involved-that is, the tires are not allowed to slip during the acceleration. Use a coordinate system in which down the slope positive acceleration. Randomized Variables 0 = 5.5° System Rubber on dry concrete Rubber on wet concrete Steel on steel(dry) Steel on steel (oiled) Shoes on wood Shoes on ice Steel on ice Static friction 1.0 0.7 0.6 0.05 0.9 0.1 0.4 Kinetic friction 0.7 0.5 0.3 0.03 0.7 0.05 0.02

33% Part (a) Calculate the maximum acceleration for the car on dry concrete, in meters per square second. @max = sin() cotan() atan() cosh() 1 2 Hints: 0% deduction per hint. Hints remaining: 2 Degrees cos() asin() acotan() tanh() Submit @max = 8.81 @max = 8.82 tan() acos() sinh() cotanh() Radians Hint B (1) 7 8 9 4 5 E M 1 + Submission History All Date times are displayed in Central Standard Time Red submission date times indicate late work. Date Time Answer Jul 01, 2022 12:26 PM Jul 01, 2022 12:28 PM Feedback * Ne - 1 2 0 BACKSPACE DEL CLEAR 63 HOME I give up! Feedback: 0% deduction per feedback. Hints END Feedback Grade Summary Deductions Potential 10% 90% Submissions Attempts remaining: 3 (5% per attempt) detailed view 1 2 5% 5% 33% Part (b) Calculate the maximum acceleration on wet concrete, in meters per square second. A 33% Part (c) Calculate the maximum acceleration for the car on ice, in meters per square second, assuming that µ = 0.100, the same as for shoes on ice.