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Simple & compound machines

This document defines simple and compound machines and describes the six simple machines: inclined plane, screw, wedge, lever, pulley, and wheel and axle. It provides examples of each machine, explaining how they work and their functions. Compound machines are defined as combinations of two or more simple machines and examples are given like tanks, engines, lathe machines, and cycles.

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SIMPLE & COMPOUND MACHINES
.::DEFINITIONS::. MACHINE : A machine is a tool consisting of one or more parts that is constructed to achieve a particular goal. SIMPLE MACHINE :: A simple machine is a mechanical device that changes the direction or magnitude of a force. COMPOUND MACHINE : Combination of two or more simple machine is called Compound Machine
Simple Machines
“The 6 Simple Machines” Inclined Plane Screw Wedge Pulley Wheel and Axle Lever
Inclined Planes • An inclined plane is a flat surface that is higher on one end • Inclined planes make the work of moving things easier
Screws A screw is a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force. It is one of the six classical simple machines. The most common form consists of a cylindrical shaft with helical grooves or ridges called threads around the outside
Screw The mechanical advantage of an screw can be calculated by dividing the circumference by the pitch of the screw. Pitch equals 1/ number of turns per inch.
Wedges • A wedge is a triangular shaped round tool, a compound and portable inclined plane, and one of the six classical simple machines. It can be used to separate two objects or portions of an object, lift an object, or hold an object in place.
Levers A lever is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum.
.::Types Of Levers::. • In a first class lever the fulcrum is in the middle and the load 1) Levers-First Class and effort is on either side • Think of a see-saw PLIER
• In a second class lever 2)Levers-Second Class the fulcrum is at the end, with the load in the middle.
3)Levers-Third Class • In a third class lever the fulcrum is again at the end, but the effort is in the middle.
Pulleys • A pulley is a wheel on an axle that is designed to support movement of a cable or belt along its circumference. • Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power.
WHEEL AND AXEL The wheel and axle is generally considered to be a wheel attached to an axle so that these two parts rotate together in which a force is transferred from one to the other.
Some other applications of Wheels & Axles RAILWAY WHEELS Turning a doorknob rotates the spindle which moves the latch.
COMPOUND MACHINES 1. Combination of two or more simple machine is called Compound Machine. 2. Simple Machines can be put together in different ways to make complex machinery. TANKS
Mercedes V6 Internal Combustion Engine
LATHE MACHINE CYCLE
A Presentation by : Khan Khalid Khan Mushran Mohd. Ashraf Maniyar Altamash Prajapati Harinath
Simple & compound machines