A vertical string, suspended from a fixed point and having a small mass attached to the free end is set into oscillations. Which of the following statements about the system are correct? i. The potential energy of the mass is a minimum at the middle of the swing ii. Its kinetic energy is a maximum at the middle of the swing iii. The sum of the potential and kinetic energies is constant throughout the swing
i,ii and iii
i and ii only
ii and iii only
i and iii only
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In reality there is no correct answer here because potential energy is maximum in the middle and kinetic energy is minimum in the middle
But the only correct one there is that the sum of the potential and kinetic energy is always constant through the oscillation machine if the potential energy is increasing the kinetic energy will decrease and vice versa
So there is no correct option
