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MECHANISMS, image, image, image, image, image - Coggle Diagram
MECHANISMS
Mechanisms
We' re surrounded by objects that move or have the capacity to move. What is it that makes it possible for these oblects to mover Look at these photos.
The sistern of gears with a chain for bicycles, the cogwheels of a clock, the lever of a seesaw, the pulley used to get water from a well are some of the simplest mechanisms that are part of many mechanical objects
Levers
A lever is a ngid bar that is used ivith a point of support or a fulcrum. The mechanical force or effort is applied on one end of the lever, F, with the aim of counteracting the resistance or load, R which acts on the other end of the lever
Fixed pulleys
A fixed pulley is a wheel that has a groove for a rope, cham or belt to go round lt. It rotates around an axle that ls fixed to an immobile surface. This reduces the load. R when elfort, f, is applied.
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Compound pulley
This is a set of fixed and moveable pulleys, often called a block and tackle. If we use more pulleys it bei.omes more complex, but less effort is needed to move the load
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Rotary motion mechanisms
These transmit motion and effort >n a c>rcular wav from the mput to the output Rotary motion mechamsms include fnct>on dnves, pulley systems, gears and worm gears.
Friction drive
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Wh eel ( I I >s called the primary drive wheel When it mi>ves, t turns or dnves the output wheel (2), causing it to move as well.
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