(7%) Problem 16: Consider a car heading down a 8.5° slope (one that makes an angle of 8.5" with the horizontal) under th

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7 Problem 16 Consider A Car Heading Down A 8 5 Slope One That Makes An Angle Of 8 5 With The Horizontal Under Th 1 (46.06 KiB) Viewed 12 times

7 Problem 16 Consider A Car Heading Down A 8 5 Slope One That Makes An Angle Of 8 5 With The Horizontal Under Th 2 (40.38 KiB) Viewed 12 times

7 Problem 16 Consider A Car Heading Down A 8 5 Slope One That Makes An Angle Of 8 5 With The Horizontal Under Th 3 (38.51 KiB) Viewed 12 times

(7%) Problem 16: Consider a car heading down a 8.5° slope (one that makes an angle of 8.5" 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 is positive acceleration. Randomized Variables 0=8.5° ice. 33% Part (a) Calculate the maximum acceleration for the car on dry concrete, in meters per square second. max 13.72 X Attempts Remain max-1 cos() sin() cotan() asin() atan() acotan() cosh() tanh() O Degrees Submit tan() a ( acos() EN sinh() 7 + cotanh() Radians Hint 7 8 9 56 4 1 2 3 M 0 VO BACKSPACE Feedback System Rubber on dry concrete Rubber on wet concrete Steel on steel(dry) Steel on steel (oiled) Shoes on wood Shoek on ice I give up! Steel on ice à 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 p = 0.100, the same as for shoes on Static friction IND CLEAR 1,0 0.7 0.6 0.05 0.9 0.1 04 Kinetic frictic 0.7 0.5 0.3 0.03 0.7 0,05 0.02 Otheexpertta.com Grade Summary Deductions Potential 05 100 Submissions Attempts remaining: (5% per attempt) detailed view
d d d ed ed ed ed ed zed med ted ted ted eted eted (15%) Problem 5: A block with a mass of m= 1.5 kg rests on a wooden plank. The coefficient of static friction between the block and the plank is u,=0.48. One end of the board is attached to a hinge so that the other end can be lifted forming an angle, 0, with respect to the ground. Assume the x-axis is along the plank as shown in the figure. m 0 Otheexpertta.com 17% Part (a) Please use the interactive area below to draw the Free Body Diagram for this block, assuming it is in static equilibrium. If necessary, use Fs for the force of static friction, and Fk for the force of kinetic friction. Feedback: is available. X Incorrect! 17% Part (b) Assuming the x-direction is along the plank as shown, find an expression for the magnitude of the force of gravity in the y- direction, F. perpendicular to the plank in terms of given quantities and variables available in the palette. mg cos(0) ✔ Correct! 17% Part (c) Write an expression for the magnitude of the maximum friction force along the surface, F,, in terms of given quantities and variables available in the palette. F.mg sin(0) XAttempts Remain
ed 17% Part (b) Assuming the x-direction is along the plank as shown, find an expression for the magnitude of the force of gravity in the y- direction, Fry perpendicular to the plank in terms of given quantities and variables available in the palette. Fmg cos(0)✔ Correct! 17% Part (c) Write an expression for the magnitude of the maximum friction force along the surface, F,, in terms of given quantities and variables available in the palette. F,-mg sin(0) * Atterhpts Remain 17% Part (d) Assuming the static friction is maximized, write an expression, using only the given parameters and variables available in the palette, for the sum of the forces along the plank, EF, & 17% Part (e) Write an expression for the maximum angle, 6, that the board can make with respect to the horizontal before the block starts moving. (Write in terms of the given parameters and variables available in the palette.) 17% Part (0) Solve numerically for the maximum angle, in degrees. Grade 100% Correct Answer 0-2565 Grade Summary Student Final Submission 0-25.64 Deduction for Final Submission Deductions for Incorrect Submissions, Hints and Feedback [7] Student Grade 100-0-0-100% Submission History All Dane are displayed in Central Standard Time And on date de la r Date Time Answer 1 Jul 01, 2022 4:32 PM 0-2564 es Hints © 2022 Expern TA, LLC Feedback Correct! Feedback