Here's why:

* Torque is a rotational force, meaning it causes an object to rotate around an axis.

* It's calculated by multiplying the force applied by the distance from the axis of rotation (the lever arm).

Think about these examples:

* Turning a doorknob: You apply a force to the knob, and the distance from the knob to the hinge is the lever arm. This creates torque that opens the door.

* Tightening a screw: The screwdriver applies a force to the screw head, and the length of the screwdriver is the lever arm. This creates torque that tightens the screw.

So, the next time you turn something, remember you're applying torque!