If the M.A. of a lever is 1.2 and its load arm is 100 cm , then the effort arm equals to.
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A lever of length 14 cm has its load arm 5 cm long and effort arm is 9 cm long. (a) To which class does it belong? (b) Draw diagram of the lever showing the position of fulcrum F and directions of both the load L and effort E. (c) What is the mechanical advantage and velocity ration if the efficiency is 100% ? (d) What will be the mechanical advantage and velocity ration if the efficiency becomes 50%?
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