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ed ugen udent/main Reade Wiley PLUS un WileyPLUS My Q&A; I Chegg.com Wiley PLUS: My Wiley PLUS I Help I Contact Us I Log Out Wiley PLUS Halliday, Fundamentals of Physics, 10e FUNDAMENTAL PHYSICS (PHYS 225/226/227) Home Read, Study & Practice Assignment Gradebook ORION Assignment Open Assignment NEXT MESSAGE MY INSTRUCTOR FULL SCREEN PRINTER VERSION BACK ASSIGNMENT RESOURCES Chapter 07, Problem 015 H6 Ch 07, Prob The figure shows three forces applied to a trunk that moves leftward by 3.36 m over a friction ess floor. The force magnitudes are Fi 5.39 N, F2 9.24 N, and F. 2.81 N, and the indicated angle is 009 e 600. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from Chapter 07, Problem the trunk? (c) Does the kinetic energy of the trunk increase or decrease? 015 M Chapter 07, Problem 021 07, Prob Ch 031 Ch 07, Prob 041 Review Score Review Results by Study Obiective (a) Number Units b) (c) the tolerance is +/-2% click if you would like to show work for this question Open Show Work Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER License Agreement l Privacy Policy I 2000-2015 John Wiley & Sons Inc. All Rights Reserved. A Division of John Wiley & Sons Inc. Version 4.14.0.5Explanation / Answer
Let's calculate the work done by each force .
W = fdcos(theta)
W1= work done by force in left direction = 5.39 ( 3.36) cos 0 = 18.1104 J
W2= Work done by force at an angle of 60 degree = 9.24 (3.36) cos 120 = -15.5232 J
W3= Work done by forceacting in downward direction = 2.81 ( 3.36)COS90 = 0
Going by the same logic, no work is done by either gravtational force or normal force
Net work = 18.1104 -15.5232= 2.5872 J
b) Net transfer of energy to trunk = 2.5872 J
c) KE of Trunk increases =
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