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01053_Pendulum (P4).txt
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1996-01-26
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8 lines
A 25kg pendulum swings through its minimum height of 2m with a speed of 3m/s. How high does the pendulum go?
A. 5m
B. 4m
C. 2.5m
D. 1.5m
C
The sum of the kinetic energy and potential energy at the minimum equals the sum of kinetic and potential energy at the top of the swing: