Question: 8 - 7 8 ( modified ) The braking mechanism consists of two pinned arms ( CAD & DBF ) and a square - threaded

8-78(modified)
The braking mechanism consists of two pinned arms (CAD & DBF) and a square-threaded screw with opposite threading (right-hand and left-hand) at E and F. When a moment is applied to the screw (MS) in a -x direction from the RHR (or CW when looking at the head), the screw draws the two arms together causing enough friction at
8 - 7 8 ( modified ) The braking mechanism

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