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it uses 2 pulleys workinf together !! hailey
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∙ 13y ago
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What if a pulley has a mechanical advantage of 1?
A pulley can either change the direction or the force, but not both. Since a single fixed pulley makes an object go up when pulled down, it has changed direction. So it can't also change force.
When did Gutenberg make the machine?
Gutenberg invented Movable Type printing- using a printing press- the usual manually operated , somewhat guillotine-like up and down type was actually out earlier but Gutenberg pioneered movable type- wood type, wood and metal composite- it went through a variety of trials and errors. The Gutenberg Bible was published in l45l, this is the first major book printed by movable type. Earlier Bibles were laboriously hand-scribed with such things as illuminated manuscripts- it is possible stencils were used to get uniform curlicues- but The Gutenberg Bible was the first printed with movable type.
What is centrifuge swing-out rotor?
A Centrifuge Swing-out Rotor is a part of a centrifuge which attaches to the motor and holds the sample tubes. A swing-out, as opposed to a Fixed Angle rotor, has holders that move from vertical to horizontal as the centrifuge speeds up.
What is a limited rotation hydraulic motor?
A limited rotation hydraulic motor provides a rotary output motion over a finite angle. This device produces a high instantaneous torque in either direction and requires only a small amount of space and simple mountings. Rotary motors consist of a chamber or chambers containing the working fluid and a movable surface against which the fluid acts. The movable surface is connected to an output shaft to produce the output motion. Figure 4.1 shows a direct acting vane-type actuator. In this type, fluid under pressure is directed to one side of the moving vane, causing it to rotate. This type of motor provides about 280° rotation. Rotary actuators are available with working pressures up to 350 kg/cm3 (4978 psi). They are typically foot mounted, flanged or end mounted. Most designs provide cushioning devices. In a double vane design similar to the one depicted in the figure above, the maximum angle of rotation is reduced to about 100°. However in this case, the torque-carrying capacity is twice that obtained by a single vane design.
What are the functionS of a drill press?
-The drill press can take bits of up to 1/2 shank size and many of those are drill bits up to an inch wide. ( it's quite common to have large drills with reduced shanks) -Other items like large hole saws can be used, as well as 'fly cutters', which are cutting bits on the end of a movable beam. These can usually cut holes in thin materials like plexiglass sheet, up to a foot in diameter. Forstner bits up to 6 or 8 inch can be used, these cut large, flat bottomed holes for installing clocks and other instruments. Milling bits can be used to 'mill' large areas of rough surface to smoothness, and 'square hole tools' can also be used. The large drill press is a very versatile tool.
What is the most effective pulley?
single fixed single movable effort up!
What is a single moveable pulley?
A simple single pulley enables the applied force to change direction. A pulley at the top of a well is the common example. In many applications, such as the fan belt on a car, it is used to transfer energy from one shaft to another.
What are two kinds of pulleys?
A fixed pulley and a movable pulley Block and tackle is made up of both
What is the advantage of a movable pulley?
a fixed pulley changes the direction you are executing the force in. fixed pulleys are made to work with gravity which makes the work you must use less than if you were lifting straight up and against gravity.
What is moveable pulley?
A fixed pulley is a pulley that is attached to a structure and does not move;changes the direction of the effort force used to life a load by a person or a spring scale and if you use a spring scale then you will need a person to pull the spring scale done to see how far she/he pull it A moveable pulley is a pulley that supports the load and is not fixed in place;reduces the amount of effort force needed to pull to lift the load when she/he pulls the spring scale then it will tell she/he pulls it.
A single fixed pulley changes the direction of the?
single fixed pulley changes the direction of the applied force, you pull down, the object goes up.
How is the design of a fixed pulley different from the design of a movable pulley?
The way they are hooked on the surface that is holding it up. They are also in a different position on the surface that is holdin it up. Dede TayTay
How does a movable pulley make work easier?
A fixed pulley is the only pulley that when used individually, uses more effort than the load to lift the load from the ground. The fixed pulley when attached to an unmovable object e.g. a ceiling or wall, acts as a first class lever with the fulcrum being located at the axis but with a minor change, the bar becomes a rope. The advantage of the fixed pulley is that you do not have to pull or push the pulley up and down. The disadvantage is that you have to apply more effort than the load
What do we use a fixed pulley for?
this is berat writing.we use fixed pulley for lifting load up only by using force on the effort that makes the load lift
What do fixed fixed pulleys always do?
A fixed pulley when used individually, uses more effort than the load to lift the load from the ground. This is what a fixed pulley always does. When attached to an unmovable object e.g. a ceiling or wall, it always acts as a first class lever where the fulcrum is located at the axis but with a minor change, the bar becomes a rope. The advantage of the fixed pulley is that you do not have to pull or push it up and down. The disadvantage is that you have to apply more effort than the load.
How is a single fixed lever different from a first class lever?
In a single fixed pulley, you pull (apply force) straight down (pull down). In a first-class lever you push up (apply force) , but not push.
What is the disadvantages of movable pulleys?
movable pulleys sometimes don't have a directional advantage so you have to pull up and you can't use a weight as the effort and whoever said this its wrong so next time USE THE TEXT BOOK STUPID PERSON sorry about this my friend can be mean.
