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## Homework Statement

A rope attached to a 19.0kg wood sled pulls the sled up a 22.0 degree snow-covered hill. A 11.0 kg wood box rides on top of the sled.

## Homework Equations

I have no what the equation may be, I was just doing some research and came across this website plus others and didn't give the formula just some numbers strung together but I attempted it below but I do not know if it is right. My problem also didn't give me the co-efficients of snow on snow and wood on wood so I also took these from previous problems I found on the internet I'm not sure if they are always constant or not.

## The Attempt at a Solution

(19kg+11kg)(9.80m/s2)(0.5+0.06)cos22degrees)

(30kg)(9.80m/s2)(0.56)cos22degrees

=153N