A gardener pushes a 11 kg lawnmower whose handle is tilted up 37∘above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4 m/s?

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Chapter7: Work, Energy, And Energy Resources
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Problem 38PE: (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a...
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A gardener pushes a 11 kg lawnmower whose handle is tilted up 37∘above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4 m/s? Assume his push is parallel to the handle.
 
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