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Some of the graphs shown below represent the motion of a pendulum -- a massive ball attached to a rigid, nearly massless rod, which in turn
is attached to a rigid, nearly frictionless pivot.

On the right below are shown four graphs of the pendulum's angle as a function of time. On the left are a set of four initial conditions and a denial. Match each graph with its most likely initial conditions (or with the denial). Note that the scales on the y axes are not necessarily the same. (There is not necessarily a one-to-one match.)

(1) θ_{0} = 120^{o} ω_{0}
= 0
(2) θ (3) θ
(4) θ (5) Not a possible pendulum graph. |
(A) (B)
(C) (D) |

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Page last modified October 12, 2005: O10