# Physics

two objects with masses m1=4kg and m2=5kg, slide past a fixed pulley and are attached together by an inextensible rope of length l=3m. if initially the masses are at the same vertical height above the ground and are then set into motion, what is the total kinetic energy of the masses when the vertical separation between them becomes 0.6m?
Original post by olive oli
two objects with masses m1=4kg and m2=5kg, slide past a fixed pulley and are attached together by an inextensible rope of length l=3m. if initially the masses are at the same vertical height above the ground and are then set into motion, what is the total kinetic energy of the masses when the vertical separation between them becomes 0.6m?

This is an applied Atwood machine physics problem.
Apply Newton’s 2nd law to find the common acceleration of the 2 masses.
Next, use suvat equations to find the final common speed reaches by the 2 masses.
We can find the kinetic energies of the 2 masses using the final speed and the given masses.

Spoiler