Question on: JAMB Physics - 2019
Calculate the velocity ratio of a screw jack of pitch 0.2cm if the length of the tommy bar is 23cm
A
230\(\pi\)
B
23\(\pi\)
C
70\(\pi\)
D
140\(\pi\)
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Correct Option: A
Given than:
P = 0.2cm
L = r = 23cm
| Velocity Ratio, VR | = | 2πr
P | = | 2πL
P | = | 2π×23
0.2 | = | 230π |
VR = 230π
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