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

question 65

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 change in gravitational potential energy U) and the change in 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:

Immanent Justice

The belief, often held by children, that moral infractions are always punished spontaneously by a natural force or intrinsic mechanism.

Moral Realism

The judgment of acts as moral when they conform to authority or to the rules of the game.

Divergent Thinking

Free and fluent association to the elements of a problem.

Seriation

Involves the ability to arrange objects in order by size, shape, or any other characteristic, marking an essential skill in cognitive development.