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A fascinating article that describes how a block and tackle (as well as levers and gears) works! ... You can see that a block and tackle, a lever, a gear train and a hydraulic system all do the same thing: they let you magnify a force by proportionally diminishing the distance through which the magnified force can act.
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www.howstuffworks.com/pulley1.htm
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Rigging a block and tackle with more pulleys is done in the same manner as described above. Always begin passing the rope through the upper block on the left pulley ... Block-and-tackle rigging should always be kept in a dry location. Lubrication should be kept to a minimum, as some lubricants can adversely affect ropes.
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www.ehow.com/how_4843400_rig-block-tackle.html
www.ehow.com/how_4843400_rig-block-tackle.html
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Dictionary: block and tackle ... ; Half the pull () is required to lift the weight () with a two single-block and tackle unit. (Precision Graphics) ... Various ways of rigging a tackle. All these are rigged to advantage.
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www.answers.com/topic/block-and-tackle
www.answers.com/topic/block-and-tackle
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NJ Safety Council, safety, njsafety, fire college, industrial safety, kids safety, children safety, defensive driving ... This program includes techniques for determining mechanical advantage and rigging and reeving. It features a demonstration of a block and tackle being used to safely lift an awkward load.
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www.njsafety.org/html/block___tackle.htm
www.njsafety.org/html/block___tackle.htm
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Describe the advantage of block and tackle afloat and ashore ... In the Navy you’ll rig a block and tackle to make some of your work easier. Learn the names of the parts of a block. Figure 2-1 will give you a good start on this. Look at the single block and see some of the ways you...
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www.tpub.com/machines/2.htm
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Tackle Block Information Continued: ... In reeving of tackle blocks, there are many methods. The method discussed below is referred to as "Right Angle" reeving. Please consult your rigging manual for other methods of reeving.
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www.slingchoker.com/sling2/crosby/vii/vii176.htm
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Block and tackle - Wikipedia, the free encyclopedia
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A block and tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift or pull heavy loads. Although used in many situations, they are especially comm...
en.wikipedia.org/wiki/Block_and_tackle
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If you have ever looked at the end of a crane, or if you have ever used an engine hoist or a come-along, or if you have ever looked at the rigging on a sailboat, then you have seen a block and tackle at work. A block and tackle is an arrangement of rope and pulleys that allows you to trade force for distance.
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myweb.tiscali.co.uk/stlukesfriday/izone/piofs/blockandt...
myweb.tiscali.co.uk/stlukesfriday/izone/piofs/blockandtackle.htm
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20-22. Breaking strength determines the ultimate strength of the block and tackle. When computing the breaking strength of a block and tackle think of this as the load that your line should be expected to handle on a regular basis. ... SECTION III - BLOCK MAINTENANCE AND RIGGING...
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www.globalsecurity.org/military/library/policy/army/fm/...
www.globalsecurity.org/military/library/policy/army/fm/55-501/chap20.htm
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