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Title: Rollers [Print this page]
Author: albees046 Time: 2022-3-17 01:52
Title: Rollers
Rollers
Rollers are force-shaping devices. They are often used, for example, in cranes or tensioning devices for contact wires to reduce the direction or the amount of force to be applied. A distinction is made between fixed and loose rollers - do my engineering assignment . The combination of several fixed and loose pulleys is called a pulley block. Pulleys do not save mechanical work, but merely redirect or reduce the force necessary to move or lift an object, in the latter case increasing the travel accordingly.
Rollers are force-shaping devices. They are often used to reduce the direction or amount of force to be applied, e.g. in cranes or tensioning devices for contact wires. A distinction is made between fixed and loose rollers. The combination of several fixed and loose pulleys is called a pulley block.
Fixed and loose rollers
With a fixed roller only the direction of the force is changed. This is why we also speak of pulleys. The tractive force required is the same as the force due to the load - urgent essay writing service . The traction path and load path are also the same. The following applies to a fixed roller in equilibrium if friction is neglected: With a loose pulley the amount of force to be applied is reduced. The force due to the load is distributed over two ropes. The pulling distance, on the other hand, is doubled. For a loose pulley in equilibrium, neglecting friction and the weight forces of pulley and rope, the following applies:
FZ=FL
sZ=2sL
F Force
s Displacement
Often a combination of loose and fixed pulley is used. The loose pulley reduces the amount of force to be applied - do my homework website . With the fixed pulley, the direction of the force to be applied can be changed. More information:
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