Two Unequal Masses Hang from Either End of a Massless $\Delta$

question 15

Multiple Choice

Two unequal masses hang from either end of a massless cord that passes over a frictionless pulley.Which of the following is true about the gravitational potential energy (U) and the kinetic energy of the system (K) after the masses are released from rest?

• A)\(\Delta\)U < 0 and \(\Delta\)K > 0
• B)\(\Delta\)U = 0 and \(\Delta\)K > 0
• C)\(\Delta\)U < 0 and \(\Delta\)K = 0
• D)\(\Delta\)U = 0 and \(\Delta\)K = 0
• E)\(\Delta\)U > 0 and \(\Delta\)K < 0

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Definitions:

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