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A woman draws water from a well using a fixed pulley. The mass of the bucket and water together is 6 kg. The force applied by the women is 70 N. Calculate the mechanical advantage. (Take g = 10 m s-2).

Machines

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Answer

Given,

Load = m x g = 6 x 10 = 60 N

Effort = 70 N

As we know that,

M.A.=LoadEffortM.A. = \dfrac{\text{Load}}{\text{Effort}} \\[0.5em]

Substituting the values in the formula we get,

M.A.=6070M.A.=67M.A.=0.857M.A. = \dfrac{60}{70} \\[0.5em] M.A. = \dfrac{6}{7} \\[0.5em] \Rightarrow M.A. = 0.857 \\[0.5em]

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