- #1

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## Homework Statement

Package is projected 10 m up a 15º incline so that it justreaches the top of the incline with zero velocity. μk =0.12

a) Determine initial velocity of package at A

## Homework Equations

Energy and friction equations

## The Attempt at a Solution

Height at the top of ramp h = 2.588m

Work = change in energy

W = -μmgcos(15) - mgsin(15) = mgh - 0.5mv^2

But I get the wrong answer. Am I supposed to use potential energy? and if not why not?

Thanks