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A screw-jack has the distance between its successive threads as P and the length...


Question

A screw-jack has the distance between its successive threads as P and the length of its tommy bar as r. Its velocity ratio is given by the expression

Options

A) \(\frac{2 \pi r^2}{P}\)

B) \(\frac{2 \pi r}{P}\)

C) \(\frac{2 \pi}{rp}\)

D) \(\frac{P}{2 \pi r}\)


The correct answer is B.


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