A complex arrangement of pulleys forms what is called the block in a block and tackle. The rope used to lift the pulleys and the
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Answer:
W = 112.76MJ
Explanation:
the work is:
where is the force executed in the direction of the displacement and the d the displacement.
so:
W = 12000Ncos(20)(10000)
we use the cos of the angule because it give us the proyection in the axis x of the force, that means the force in the direction of the displacement.
W = 112.76MJ