# A 337kg crate needs to be lifted to a height of 2.3m using a ramp that is 7.6m long. Ideally, how much work will it take to lift the crate?

Nov 22, 2015

I found: $\approx 7596 J$

#### Explanation:

I think that you can use the work done against gravity as:
${W}_{g} = m g h$
${W}_{g} = 337 \cdot 9.8 \cdot 2.3 \approx 7596 J$
You can also try using the force needed to push the crate (equal to the $y$ component of the weight) and the distance and you'll get the same result.