University Physics (University Physics) ctice Assignment Gradebook ORION Downloa

Question

University Physics (University Physics) ctice Assignment Gradebook ORION Downloadable eTextbook ment FULL SCREEN PRINTER VERSION 4 BACK NEXT Chapter 07, Problem 036 A 5.0 kg block moves in a straight line on a horizontal frictionless surface under the influence of a force with axis is set by F, 8.00 N. How much work is done by the force as the block moves from the origin tocg that ares with position as shown in the figure. The scale of the figure's vertical rictionless surface under the influence of position as shown in the fig 02 46 8 Position (m) Number | Units the tolerance is +/-7% SHOW HINT K TO TEXT LINK TO SAMPLE PROBLEM VIDEO HINI-LECTURE en/shared/assignment/test/agli st.uni?ideasnmt1 544 282 #N 1 0079 Question Attempts: Unlimited SAVE FOR LATER SLJBMIT ANSWER Show all ex3 TR solns.pdf

Explanation / Answer

given
m = 5 kg
fricitonless surface, horizontal
variable force with position

Fs = 8 N
now, in force displacement graph, the area under the grpah is the work done by the force
hence
work doen W = 2*Fs + 0.5*2*Fs - 2*Fs/2 - 0.5*2*Fs/2
W = 2*Fs + Fs - Fs - 0.5*Fs = 1.5 Fs
hence
W = 1.5*8 = 12 J

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