Class Management I Help Practice Problames 6: Forces & Newton\'s Laws Begin Date

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Class Management I Help Practice Problames 6: Forces & Newton's Laws Begin Date: 2/1/2016 12:00:00 AM Due Date: 5/6/2016 12:01:00 AM End Date: 5/6/2016 12:01:00 AM (13%) Problem 6: A toy car is rolling down the ramp as shown in the figure. The car's mass is m 1.1 kg and the ramp makes an angle of 0 15 degrees with respect to the horizontal. Assume the car is rolling without friction the expertta.com 50% Part (a) Using the coordinate system specified, give an expression for the acceleration of the car in terms of 0, g, and the unit vectors i and j Final Correct Answer Student Answer Grade a g sin(0) 0% a g sin(0) cos(0) i g sin(0) j Grade Detail Correct Student Feedback icos(0)gsin(0) The student is missing this term. 3.3333333333333 jgsin(0) The student is missing this term. 33.3333333333333% The student is missing this term. 33.3333333333333% Your answer is far enough from the correct answer that no specific feedback can be given. Extra Term Penalties 45% Final Answer Credit 0% Submission History Answer Hints Feedback Totals 0% Note: Feedback not accessed. a (m g sin(0) i /m 4% a g sino i 4% 0% Note: Feedback not accessed. a g sino) 0% 0% 0% 0% Totals 8% 0% 0% 8% 50% Part (b) What is the magnitude of this acceleration in m/s

Explanation / Answer

Part A) Accleration = gsin() along the incline plane

=> Accleration = gsin()cos() i - gsin()sin()j = 2.45 i - 0.656 j Answer

Part B) magnitude = gsin() = 2.536 m/s^2 Answer

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