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chegg Study i Gunded Solut e dhegg Study l G nded Solur a Chegg study | Guided Solut C Two Horizontal Foroes, And+ v https://edugen.wileypi nfruni actice Assignment Gradebook ORION Downloadable efeatbook nment Chapter 04, Problem 003 Go Two horizontal forces, E and F, are acting on a box, but only F is shown in the drawing. E cam point either to the right or to the left. Tthe box moves only along the x avis. There is no friction between the box and the surface. Suppose that F, 4.1 N and the mass of the box is 3.8 kg. Find the magnitude and direction of , when the acceleration of the box is (a) +4.2 m/s', (b) -4.2 m/s', and (c) 0 m /s (b) E2--01 Click if you would like to Show Work for this question: Modity Show wwrk Question Attempts: Unlimited SAvE FOR LATER 024 AM

Explanation / Answer

Net Force on the block is given by

F=F1+F2

Since F=ma

=>ma =F1+F2

F2=ma-F1

a)

If a=4.2 m/s2

=>F2=3.8*4.2-4.1

F2=11.86 N

b)

If a=-4.2 m/s2

F2=3.8*(-4.2)-4.1 =-20.06 N

c)

If a=0 m/s2

F2=0-4.1 =-4.1 N

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