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# lecture+notes+17 - 14:440:222 Dynamics(Lecture Note#17...

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14:440:222 Dynamics (Lecture Note #17) Instructor: Prof. Peng Song Rutgers University

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Today’s Lecture Relative motion analysis: acceleration
In the mechanism for a window, link AC rotates about a fixed axis through C, and AB undergoes general plane motion. Since point A moves along a curved path, it has two components of acceleration while point B, sliding in a straight track, has only one. The components of acceleration of these points can be inferred since their motions are known. How can we determine the accelerations of the links in the mechanism? Applications

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In an automotive engine, the forces delivered to the crankshaft, and the angular acceleration of the crankshaft, depend on the speed and acceleration of the piston. How can we relate the accelerations of the piston, connection rod, and crankshaft to each other? Applications (cont’d)