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**1. Homework Statement**

How much work is required to push a 25-kg block up 2m up a frictionless 30 degree incline at a constant speed?

**2. Homework Equations**

W=F(delta X) ; W=(F cos theta)(delta X)

**3. The Attempt at a Solution**

I did n=mg -- n=(25)(9.8)=245 & that is the correct answer..but I don't understand how.