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Unformatted text preview: not (do) change in time.
Example: Mx’’(t)=f(t) & M(t)x’’(t)=f(t)
For time-invariant systems:
For 1st law:
A particle remains at rest or continues to move in a
straight line with a constant velocity if there is no
unbalancing force acting on it. 2nd law:
translational Time shift Time shift Sys : rotational
rotational 3rd law:
For every action has an equal and opposite reaction
For This course deals with time-invariant systems.
3 4 Translational mechanical elements:
f(t) K f(t)
x(t) Mass-spring-damper system Damper
x2(t) B f(t)
x1(t) x2(t) K B
M x1(t) x(t)
x(t) 5 Free body diagram 6 Mass-spring-damper system Direction of actual force will be
automatically determined by the
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This document was uploaded on 03/02/2014 for the course ME 451 at Michigan State University.
- Spring '08