Question

A proud father is pushing a baby stroller (fig 4.5) with a 12 N force at an angle of 25 0 below the horizontal. How much work (J) does he do by pushing the stroller a distance of 126m?

25 degrees F 12 N 25 degrees Figure 4.5 Only the component of force in the direction of the motion. pro- duces work

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Answer #1

Work= Force*Displacement*cos(theta)

Force=12N, Theta=-25 degree, Displacement= 126 meter

Work= 12*126*cos(-25)

Work=1370.337 Joule

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