Refer fig.3 pivot point O1, force at B acting vertically up, then ___ – McqOptions

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1.	Refer fig.3 pivot point O1, force at B acting vertically up, then ____.
A.	brake is equally effective in both the directions
B.	brake is more effective in counter-clockwise directions
C.	brake is more effective in clockwise directions
D.	brake is not effective in any direction
Answer» D. brake is not effective in any direction

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