what is the purpose of a lever
The function of membranes and levers in the ear is to transmit  sound efficiently from air to fluid. The auditory receptors of the  inner ear operate in a fluid environment, â¦ and that it is really an  underwater sound receiver.
Example: seesaw, crowbarThe load is between the force and the fulcrum. Example: wheelbarrow (weight carried by wheel)The force is applied between the fulcrum and the load. Example: human elbow, when bending A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum.