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## Homework Statement

What is the minimum work needed to push a 1200Kg car, 118m up 18 degree incline with no friction?

## Homework Equations

I used mgsin18 - mgcos18 (don't think this is right)

I know with friction, you do mgsin18 - (coef. friction)(mg)(cos18), and then to get work you multiply that answer by the distance. But without friction it doesn't work the same way, but I'm not sure what to do.

## The Attempt at a Solution

using mgsin18 - mgcos18, I get a negative answer which is wrong. The correct answer is 4 x 10^5, but I get -7290. WAY off!