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How much does a block and tackle pulley system multiply the effort force?
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∙ 11y ago
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Wiki User
∙ 11y ago
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What type of pulley would increase the output force?
A pulley system that has multiple pulleys in line with each one having its output drive the next will increase the force. This would be called a tackle pulley.
Which pulley setup would decrease the amount of effort force needed to lift an object?
One moving pulley attached to the object being lifted, but one may not be enough for very heavy loads. That would depend on what lifting devices you had on hand, and how heavy the load is. If the load is say 300 lbs. and you only have one man available to do the lifting; then you would not use a simple single pulley because you would be lifting the full 300 lbs. as dead weight. If you elect to use a Gun Tackle you would gain a mechanical advantage of 2. Thus dividing the dead weight load by a factor of 2, which would mean that the man hauling on the running end of the rope would be experiencing a load of 150 lbs. On the other hand if you were to use a Luff then the M.A. is 3; thus reducing the load to 100 lbs. A Double Tackle gives you an M.A. of 4; reducing your load weight to 75 lbs. A Gyn Tackle (1 triple sheave block and 1 double sheave block) gives you an M.A. of 5; the man on the pulling end of the system is now only experiencing a pull of 60 lbs. A Threefold Purchase (2 triple sheave blocks) gets an M.A. of 6; thus 50 lbs. But for all practical purposes, you would not elect to dig out a Threefold Purchase for such a small load to be shifted. A more efficient method would be to use either a Luff or a Double tackle. Keep in mind that as you reduce the load weight on the hauling end, you increase the amount of line you have to pull through the tackle. I.e. if you use a simple pulley, for every foot you lift the off the deck, 1 foot of line passes through the pulley. Conversely, if you use a Double Tackle (Twofold Purchase) for every one foot lifted off the deck you must pull 4 feet of line through the sheaves.
Which would increase mechanical advantage?
A mechanical advantage greater than one means you can perform more work than the effort you expend. The mechanical advantage gives you more capability. A mechanical advantage of only 1 means you really do not have any advantage.
Which machine has the greatest mechanical efficiency a block and tackle or a lever?
In theory there is no difference in efficiency (it would be 1), but in practice I think a block and tackle would lose more force to friction in the pulleys and between the rope and pulleys.
Why do scientists specialize in a particular field of study?
Science is too broad of a topic to tackle as a whole.
What is the function of block and tackle pulley?
Block and tackle reduces the effort needed to lift or pull heavy items. Each circle of the lifting tackle reduces effort by 50 %.
Is a block and tackle a wheel and axle?
No, a block and tackle is not considered a wheel and axle system. It is considered a type of pulley system.
What were two of the mathematician Archimedes inventions?
The water screw and the block-and-tackle pulley system.
What is the advantage of a pulley?
Of a single pulley wheel, only that it changes the direction of the force ie: from overhead. > On a block and tackle system, 2 or more pulley wheels are used in a certain way to produce mechanical advantage. The simplest type of block and tackle offers a mechanical advantage of 2
What type of pulley would increase the output force?
A pulley system that has multiple pulleys in line with each one having its output drive the next will increase the force. This would be called a tackle pulley.
What are three types of pulleys?
Fixed pulley, Movable pulley, block and tackle
When was the pulley invented?
The block and tackle (or pulley system) was brought to us by Archimedes (287BC - 212BC) in Greece, but neither Archimedes, nor any who wrote about him and his extraordinary work dated the invention.stupid answer
What are pulley leavers?
they r wooden discs with a tackle
What is a chain fall?
A block and tackle (pulley system) that uses chain to turn a cogged wheel. This permits lifting of extremely heavy loads.
How did archmedes discover the moving pulley?
Archimedes is credited by Plutrarch with designing the first block and tackle pulley.
What are two kinds of pulleys?
A fixed pulley and a movable pulley Block and tackle is made up of both
What are types of pulleys?
There are fixed, moveable, and compound pulleys.
