Roshan has to lift the given weight using a pulley.
a. Which property in the rope should he test for before lifting the weight?
b. Natural or synthetic fibres are best suited for this purpose? Justify.
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The real mechanical advantage of a pulley is in using many pulleys at once. ... With a pulley, the trade-off is distance. So, if two pulleys are used together, the amount of force required is cut in half, but twice the amount of rope is needed to be pulled to raise the object to the same desired height.
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