A rigid bar that is supported at one point
Fulcrum
Lever
Pulley
Wedge
Screw
Wheel & Axel
Inclined Plane
Mechanical System
Efficiency
A rigid bar that is supported at one point is known as a fulcrum. It is a point of support or pivot for a lever.
Lever is a simple machine consisting of a rigid bar or rod that pivots on a fulcrum to exert a force. It amplifies force or changes the direction of force.
Pulley is a simple machine consisting of a wheel with a groove in which a rope or chain can run. It is used to lift or move objects by changing the direction of force and reducing the force required.
Wedge is a simple machine consisting of a triangular-shaped object with a sharp edge. It is used to split or separate objects by applying force to push them apart.
Screw is a simple machine consisting of an inclined plane wrapped around a cylindrical post. It is used to hold objects together or lift objects by rotating it into the material.
Wheel & Axel is a simple machine consisting of a circular object (wheel) that rotates on a central shaft (axel). It is used to transfer force and motion from one place to another.
Inclined Plane is a simple machine consisting of a flat, sloped surface. It reduces the amount of force needed to lift or move objects by increasing the distance over which the force is applied.
Mechanical System refers to a collection of interconnected component parts that work together to perform a specific function or task. It can be made up of various simple machines.
Efficiency is a measure of how well a machine converts input energy into useful output energy. It is the ratio of useful work output to the total energy input, expressed as a percentage.