A heavy boy and a lightweight girl are balanced on a massless seesaw. If they both move forward so that they are one-half their original distance from the pivot point, what will happen to the seesaw?
A) It is impossible to say without knowing the masses.
B) It is impossible to say without knowing the distances.
C) The side the boy is sitting on will tilt downward.
D) Nothing, the seesaw will still be balanced.
E) The side the girl is sitting on will tilt downward.

Question

Quizplus · Accepted Answer

When both move to half their original distance from the pivot, their torques decrease proportionally, maintaining balance.

A Heavy Boy and a Lightweight Girl Are Balanced on a Massless