Why is a circular door knob called a force multiplier?

Why is a circular door knob called a force multiplier? 2) Inclined planes are classified as force multipliers because less force is required than to move a load vertically. 2) The circular doorknob is called a speed multiplier because less force is required to move an axle with a handle than to move it with … Continue reading Why is a circular door knob called a force multiplier?