The total energy of a simple pendulum is E. When the displacement is one-third of the amplitude, its kinetic energy will be:

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R). In light of the statements, choose the correct answer: Assertion (A): In simple harmonic motion, the potential energy of the particle is maximum at the extreme positions. Reason (R): At the extreme positions, the velocity of the particle is maximum.

If V, A, and X are the velocity, acceleration, and displacement respectively of a particle executing simple harmonic motion, then at the mean position: