1. 3. Torque
▪ Torque(rhymes with fork) is:
- the rotational counterpart of force.
- a force which causes an object to turn or rotate about its axis.
- differs from force just as rotational inertia differed from inertia.
▪ The distance between the applied force and the axis of rotation is
important. This distance is referred to as the lever arm.

2. 3. Torque
▪ Torque(rhymes with fork) is:
- the product of the lever arm and the force applied.
Torque = lever arm x force
▪ A see-saw is a good example of torque. To balance the see-saw you
have to get just the right combination of mass and distance from
the center. When the see-saw is balanced when the 250 N child is 3
meters from the center and the 500 N child is 1.5m from the center.
Both have equal torque (750 Nm).

3. 3. Torque
▪ Example:
What torque is generated on a bolt when a force of 500 Newton’s
is applied at a right angle to a 25 cm wrench?
Torque = Force x lever arm = (500N)(0.24 m) = 125 Nm