A gardner mows a lawn with an old fashion lawn mower. Thehandle of the mower mak

Question

A gardner mows a lawn with an old fashion lawn mower. Thehandle of the mower makes an angle of 34 degrees with the surfaceof the lawn. Part A If a 220-N force is applied along the handle if the 18-kgmower, what is the normal force everted by the lawn on themower?
Part B If the angle between the surface of the lawn and the handle ofthe mower is increased, does the normal force exerted by the lawnincrease, decrease, or stay the same? Part A If a 220-N force is applied along the handle if the 18-kgmower, what is the normal force everted by the lawn on themower?
Part B If the angle between the surface of the lawn and the handle ofthe mower is increased, does the normal force exerted by the lawnincrease, decrease, or stay the same?

Explanation / Answer

A)Fnormal = Fa in the vertical direction + Fg FNormal = 220N*sin(34)+18kg*9.81m/s2 = 123.02N + 176.58N= 299.6N B) If the angle between the surface of the lawn and the handle isincreased, than the FNormal increases, becoming amaximum at the 90 degree angle

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