a combination of one or more fixed pulleys and one or more movable pulleys
such as a crane
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cranes and others i don't know find out yourself
I know for a fact that the answer is a pulley.
Block and tackle reduces the effort needed to lift or pull heavy items. Each circle of the lifting tackle reduces effort by 50 %.
No. A pulley is a simple machine. A block and tackle is a "complex" machine, because it's made of several simple machines.
a pulley.
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six fold
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Fixed pulley, Movable pulley, block and tackle
No, a block and tackle is not considered a wheel and axle system. It is considered a type of pulley system.
block and tackle
block and tackle
I know for a fact that the answer is a pulley.
Block and tackle reduces the effort needed to lift or pull heavy items. Each circle of the lifting tackle reduces effort by 50 %.
Archimedes is credited by Plutrarch with designing the first block and tackle pulley.
A fixed pulley and a movable pulley Block and tackle is made up of both