Understanding Torque and Equilibrium

What is torque? (Select all that apply)

• The tendency of a force to rotate an object about an axis.

• The distance between two forces in rotational motion.

• The cross product between the distance and the force.

• The dot product between the distance and the force.

Which of the following scenarios would result in the greatest torque?

• A 10 N force applied 2 meters from the pivot point.

• A 15 N force applied 1 meter from the pivot point.

• A 5 N force applied 3 meters from the pivot point.

• A 20 N force applied 0.5 meters from the pivot point.

If a 20 kg child is sitting 2 meters from the pivot of a seesaw, where should a 40 kg child sit to balance the seesaw?

• 0.5 meters from the pivot

• 1 meter from the pivot

• 2 meters from the pivot

• 4 meters from the pivot

What condition must be met for an object to be in rotational equilibrium? (Select all that apply)

• The net force acting on the object must be zero.

• The object must have equal mass distribution.

• The sum of all torques acting on the object must be zero.

• The object must be moving at a constant speed.

When a lever is used to lift a heavy object, moving the load further from the fulcrum will:

• Increase the effort required.

• Decrease the effort required.

• Have no effect on the effort required.

• Increase the efficiency of the lever

To keep a seesaw in complete equilibrium (not moving vertically, horizontally, or rotating), which of the following conditions or observations must be true? (Select all that apply)

• The sum of all vertical forces must be zero.

• The sum of all horizontal forces must be zero.

• The sum of all torques must be zero.

• The seesaw must have equal weights on both sides regardless of distance.

• The seesaw must be at rest.