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
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?