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Untitled Prezi

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roberto tejada ramirez

on 30 May 2013

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Transcript of Untitled Prezi

Levers can help lift a heavy weight withmuch less
efort.A lever consist of a road , with balances with a fixed point.
The heavy object that has to be moved or liftedv is called the Load. The point at which the road is fixed is calledmFulcrum. LEVER SCREW A screw is an inclined plane wrapped around a pole wich holds thing together of lifts materials.
It is an inclined plane wrappedaround a central shaft.The rotational motion of the central shaf causes a linear apwardsmotion of the screw. INCLINED PLANE Inclined plane is a machine for elevating objects;consists of a piane surface that makes an actue angle with the horizontal. It is an inclined surface used to raise and object.It decreases the effort. THE MACHINES SIMPLE MACHINES DEFINITION A machine is a device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form MACHINES DEFINITION A simple machine is a device that makes work easier .There a six types of simple machines: levers , pulleys , wheel and axel , wedges , screws andinclined planes. WEDGE A wedge is an objectwith at least one slating endingin a sharp edge , wich cuts materials.Wedges are moving inclined planes wich split or separate a load. THE WHEEL AND AXLE The wheel and axle has a larger wheel (or wheels) conected by smaller cylinder (axle) and is fastened to the wheelso that they turn together.When the axle is turned , the wheel movesa greater distance than he axle , but less force is need it to move it.The axle moves a shorter distance , but it takesa greater force to move it. PULLEY The pulley is a wheel that usually has a groove around the outside edge.This groove is for a rope THE END
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