Posted by **roshna** on Friday, December 2, 2011 at 7:08am.

A neighbor pushes a lawn mower on a lawn that is level with a force of 230 Newtons. If 45% of this force is directed downward, how much work is done by the neighbor in pushing the mower 8 meters?

- physics -
**drwls**, Friday, December 2, 2011 at 9:05am
The force directed horizontally is not the remaining 55%, it is

sqrt[1 - (0.45)^2] = 89.3%,

which amounts to 205.4 Newtons.

Multiply that by 8 meters for the work done.

Note that Fx^2 + Fy^2 = Ftotal^2

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