Asked in PhysicsToothbrushes
What kind of a simple machine is a toothbrush?
April 07, 2015 3:17PM
A toothbrush is not a simple machine, it does not work on the principle of levers, effort, and load.
It's not a machine at all in mathematical terms. A "machine" is that which performs "work", i.e. transfers or converts energy.
You arm moving the toothbrush is a machine by this definition, however.