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
Correct Answer: Option D
Explanation
Kinetic energy at O = P.E at P 1/2mV = mgh
h = v/2g = 0.2m