Question

A shopper pushes a 16.0 kg shopping cart at a constant velocity for a distance of 26.0 m. She pushes with a force P downward at an angle of 24.0°below the horizontal. A 440 N frictional force opposes the motion of the cart. (15 points) (a) Draw a FBD and label each of the forces acting on the shopping cart, including the components o the pushing force P the shopper exerts. (b) Determine the magnitude of the pushing force P that the shopper exerts. (Hint: remember she pushes it at a constant velocity) (c) Determine the work done by each of the following forces acting on the shopping cart after it is displaced: Workp = Worken - Workx = TestilA_(4,5,6)_SP20.docx20

Answer 1

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M= 10kg, d=26m, p@24 fx = 44N P AN * mig b) along horizontal (if speed is constant & Inet), =0) PAPO = fx = p coB 24 = 44 p=48.1639N C) Wp = (PESO)x d = 44x26=1144J) And Wewe = Work-done by Normal reaction= No do Congo =0 And =find Coplso = -44826=- 1144 J Bfx