Goal: Hone the concept of torque
Source: UMPERG-ctqpe131
Which of the following statements is true about this situation?
- There are no points having zero total torque.
- There is one point having zero total torque.
- There are many points having zero total torque.
Commentary:
Answer
(3) Many students realize that there is at least one point, the
intersection of the lines of action of the two forces, having zero
torque. A drawing is usually sufficient to convince students that there
is an entire line along which the torque is zero.