A person pushes a 13.0 kg lawn mowerat constant speed with a force of 83.0N directed along the handle, which is at an angle of = 41.0° to the horizontal (Fig. 4-45).

Figure 4-45

(a) Draw the free-body diagram showing all forcesacting on the mower. (Do this on paper. Your instructor may ask youto turn in this diagram.)

(b) Calculate the horizontal retarding force on the mower
(c) Calculate the normal force exerted vertically upward on themower by the ground.
(d) Calculate the force the person must exert on the lawn mower toaccelerate it from rest to 1.3 m/s in2.0 seconds (assuming the same retarding force).


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