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In fig shows a block and tackle system of pulleys used to lift a load . (a) How many strands of tackle are supporting the load ? (b) Draw arrows to represent tension T in each strand. (c) What is the mechanical advantage of the system ? (d) When load is pulled up by a distance 1 m, how far does the effort end move ? (e) How much effort is needed to lift a load of 100 N ? |
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Answer» In fig shows a block and tackle system of pulleys used to lift a load . (a) How many strands of tackle are supporting the load ? (b) Draw arrows to represent tension T in each strand. (c) What is the mechanical advantage of the system ? (d) When load is pulled up by a distance 1 m, how far does the effort end move ? (e) How much effort is needed to lift a load of 100 N ?
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