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A screw jack, 25% efficient and having a screw of pitch 0.4cm is used to...

A screw jack, 25% efficient and having a screw of pitch 0.4cm is used to raise a load through a certain height. If in the process the handle turns through a circle of radius 40cm, calculate the (i) Velocity ratio of the machine. (ii) The Mechanical advantage of the machine. (iii) Effort required to raise a load of 1000N with the machine. (take л= 3.14) (SSCE)?
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Asked by Paul on 8th February, 2023
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