BACK Chapter 07, Problem 014 The figure here shows an overhead view of three hor

Question

BACK Chapter 07, Problem 014 The figure here shows an overhead view of three horizontal forces acting on a cargo canister that was initially force magnitudes are F1-2.50 N, F2-3.80 N, and F3 10.0 N, and the indicated angles are 2-47.0 and 3-32.0. what is the net work done on the canister by the three forces during the first 4.00 m of displacement? stationary but that now moves across a frictionless floor. The Unit the tolerance is +/-5% will learn while you earn points based on the Point Potential Policy set by your instructor By accessing this Question Assistance, you

Explanation / Answer

F1=2.50N, F2=3.80N and F3=10.0N

2=47 deg, 3 = 32.0deg

F1x = -2.50 N

F1y=0.0 N

F2x=F2cos2 = -3.80cos47.0 = -2.6 N

F2y=F2cos2 = -3.80sin47.0 = -2.78 N

F3x=F3cos3 = 10.0cos32.0 = 8.48 N

F3y=F3cos3 = 10.0sin32.0 = 5.3 N

Fnetx=F1x+F2x+F3x= -2.50-2.60+8.48 = 3.38 N

Fnety=F1y+F2y+F3y= 0.0-2.78+5.30 = 2.52 N

Fnet=sqrt(Fnetx^2+Fnety^2)=sqrt(3.38^2+2.52^2) = 4.22 N

Wnet = Fnet*d = 4.22*4.0 = 16.88 J

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