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Mutiple choice:
The lever arm (or perpendicular lever arm) in the context of rotational
motion
(1) can be thought as perpendicular component of r
(2) is shortest line drawn from axis of rotation to line of action of
force
(3) is same as r
a) Only (2) is correct
b) Only (1) is correct
c)All (1), (2), and (3) are correct
d)Both (1) and (2) are correct

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