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## Homework Statement

Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is suspended from the ceiling. The masses are released from rest, and the more massive one starts to descend. After this block has descended a distance 1.30 m, its speed is 3.50m/s .

If the total mass of the two blocks is 14.0 kg, what is the mass of the more massive block?

## Homework Equations

(1/2)mv1^2+mgy1=(1/2)mv2^2+mgy2

## The Attempt at a Solution

Can someone help me get started with this problem? I'm not sure I am using the right equation or approaching it correctly