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)
Correct Answer: Option A
Explanation
P = 0.2cm, L = r = 23cm
| VR | = | 2πr
P |
= | 2πL
P |
= | 2π×23 0.2 |
= | 230π |
There is an explanation video available below.