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- 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: