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SoulEater
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Homework Statement
In the absence of friction, how fast will the masses move after the 2kg mass has dropped 25 cm? [answer: v = 1.57 m/s]
Homework Equations
Conservation of Energy
The Attempt at a Solution
KE2F + KE1F = PE2I + PE1I
.5*m2*vf2^2 + .5*m1*vf1^2 = m2*g*h2 + m1*g*h1
.5 *2*vf2^2 + .5*1*vf1^2 = 2*9.8*.25 + 1*9.8*?
vf2 = vf1
3/2*vf^2 = ?