Robert's linkage is named after Richard Robert (1789-1864) and can be used to draw a close approximation

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Robert's linkage is named after Richard Robert (1789-1864) and can be used to draw a close approximation to a straight line by locating a pen at Point F. The distance AB is the same as BF, DF and DE. Knowing that the angular velocity of plate BDF is 2 rad/s counterclockwise when θ = 90°, determine (a) the angular velocities of bars AB and DE, (b) the velocity of Point F. When θ = 90°, point F may be assumed to coincide with point E, with negligible error in the velocity analysis.

Robert's linkage is named after Richard Robert (1789-1864) and can
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Vector Mechanics for Engineers Statics and Dynamics

ISBN: 978-0073398242

11th edition

Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek, Phillip Cornwell, Brian Self

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