Posted by dave on Saturday, November 26, 2011 at 6:49pm.
when up vertically 1.96 sin 23.8
call that h = 1.96 sin 23.8
gain in potential energy = m g h
inital Ke = (1/2) m (7.18)^2 = initial total Energy
final total energy = (1/2)m(3.13)^2+m g h
loss to friction = inital total - final total
= (1/2)m(7.18^2-3.13^2) -mgh
-842.72 J
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