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Dynamics cheat sheet

my dynamics notes - 12000.org

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12.3 spring pendulum with block moving in slot<br />

<br />

r<br />

<br />

y<br />

y<br />

r<br />

System. Pendulum with blob which<br />

moves in slot perpendicular to axis. In<br />

addition, length of the axis of pendulum<br />

itself changes in time. y and r are<br />

measured from static equilibrium of<br />

springs<br />

y<br />

Velocity diagram<br />

r<br />

2y <br />

r 2<br />

2r<br />

<br />

y<br />

ÿ<br />

r<br />

acceleration diagram<br />

y 2<br />

r<br />

55

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