But initially, isn't it all potential energy? Therefore the initial kinetic energy for both masses would be 0.
And at the end of the movement, wouldn't both of the masses have converted that potential energy to kinetic energy? Therefore the potential energy at the end would be 0.
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 +...