lever
A crank and slotted quick return mechanism is a mechanism that has a slotted lever attached to another lever and a wheel. These types of mechanism are frequently found in shaping machines.
A lever or a form of it such as a gear, screw, inclined plane, or pulley can be used to increase force at the expense of distance traveled and/or elapsed time.
Screw
A vise has 2 simple machines, a screw and a lever, but the main one is the screw.
ldk
First Class
A screw multiplies effort through the principle of the lever. The screw part of the fastener is actually a small lever that allows the screw to bite and dig into other materials.
There are 2 parts of a Lever mechanism: 1.) The lever (shaft) itself ... 2.) the Fulcrum.
Its a simple machine
First Class
False.