I V usb06ca.theexpertta.com Gateway - SF State Unive Course: PHYS 0222-08 G... Write and submit Lakoff T... ta The Expert TA | Human-li... Sy 27~{\\circ}=9.81tan(theta)... Course Hero G screenshot mac - Google.. theExpertTA.com | Student: Isolorzano@sfsu.edu My Account Log Out Class Management | Help Chapter 6: Application of Newton's Laws Begin Date: 8/21/2022 12:01:00 AM -- Due Date: 10/7/2022 11:59:00 PM End Date: 12/9/2022 11:59:00 PM (6%) Problem 8: Consider a car heading down a 9.5 slope (one that makes an angle of 9.50 with System Static friction Kinetic friction EXPERT a 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 Rubber on dry concrete 1.0 0.7 tires are not allowed to slip during the acceleration. Use a coordinate system in which down the slope is positive acceleration. Rubber on wet concrete 0.7 0.5 Steel on steel(dry 0.6 0.3 Randomized Variables Steel on steel (oiled) 0.05 0.03 Assignment Status 0 =9.50 Shoes on wood 0.9 0.7 Click here for Shoes on ice 1'0 0.05 detailed view Steel on ice 0.4 0.02 Problem Status Otheexpertta.com Completed Completed W N Partia $ 33% Part (a) Calculate the maximum acceleration for the car on dry concrete, in meters per square second. Completed amax = Grade Summary Completed Deductions 0% Potential 100% sin( cos tan() It ( ) 7 8 9 HOME Submissions 8 Partial cotan() asin() acos() E 4 5 6 Attempts remaining: 998 Completed atan() acotan() sinh() 1 2 3 0% per attempt) detailed view 10 Completed cosho tanh() cotanh() + 0 0% 11 Completed Degrees Radians VO BA 12 13 Submit I give up! 14 Hints: 2 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback. 15 16 Completed -Draw the free body diagram. Notice the car is moving down the hill, and we 17 Completed want to know how fast the car can accelerate in the same direction. What is the direction of force of friction in this situation? 18 -Tires are not allowed to slip and they rotate, so what is the direction of intended motion of the tires against the road? What kind of frictional force is the car experiencing? Since we want the acceleration as big as possible, the friction should be as big as possible and in the same direction as the force of gravity. Submission History All Date times are displayed in Pacific Standard Time Red submission date times indicate late work. Date Time Answer Hints Feedback 1 Oct 07, 2022 12:58 PM max = -Draw the free body diagram. Notice the car is moving down the hill, and we want to know how fast the car can accelerate in 1.61 the same direction. What is the direction of force of friction in this situation? -Tires are not allowed to slip and they rotate, so what is the direction of intended motion of the tires against the road? What kind of frictional force is the car experiencing? Since we want the acceleration as big as possible, the friction should be as big as possible and in the same direction as the force of gravity. 4 33% Part (b) Calculate the maximum acceleration on wet concrete, in meters per square second. 33% Part (c) Calculate the maximum acceleration for the car on ice, in meters per square second, assuming that us = 0.100, the same as for shoes on ice. All content @ 2022 Expert TA, LLC