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An oscillating pendulum has a velocity of 2ms-1 at the equilibrium position O and velocity...

Physics
WAEC 1990
An oscillating pendulum has a velocity of 2ms-1 at the equilibrium position O and velocity at same point P. Using the diagram above, calculate the height of P above O. (Take g = 10ms2)
  • A. 5.0m
  • B. 2.0m
  • C. 0.4m
  • D. 0.2m
  • E. 0.1m
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Correct Answer: Option D
Explanation
Kinetic energy at O = P.E at P 1/2mV = mgh
h = v/2g = 0.2m
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