Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of...
PHYSICS
JAMB 1994
Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of the tommy bar is 21cm
- A. \(\frac{1}{140}\)\(\pi\)
- B. 14\(\pi\)
- C. 70\(\pi\)
- D. 140\(\pi\)
Correct Answer: D. 140\(\pi\)
Explanation
V.R = \(\frac{2\pi L}{p}\)
= \(\frac{2 \times \pi \times 2}{0.3}\)
V.R = 140\(\pi\)
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