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 - SchoolNGR

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

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

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A \(\frac{2 \pi r^2}{P}\)
B \(\frac{2 \pi r}{P}\)
C \(\frac{2 \pi}{rp}\)
D \(\frac{P}{2 \pi r}\)

Correct Answer: Option B

Explanation:

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