Burl and Paul on a sign-painting scaffold are in equilibrium,which means that the net upward supporting force of the vertical ropes is
A)equal to their weights.
B)greater than their weights.
C)equal and opposite to the combined weights of Burl,Paul,and the scaffold.
D)none of the above

Question

Quizplus · Accepted Answer

For a system to be in equilibrium, the net force acting on it must be zero. This means the upward supporting force provided by the vertical ropes must exactly balance the downward force due to gravity on Burl, Paul, and the scaffold combined.

Burl and Paul on a Sign-Painting Scaffold Are in Equilibrium,which