Which of the diagramshown in figure represents variation of total mechanical energy of a pendulum oscillating in air as function of time?

Which of the diagramshown in figure represents variation of total mech

1.	Which of the diagramshown in figure represents variation of total mechanical energy of a pendulum oscillating in air as function of time?
Answer» SOLUTION :When a pendulum oscillatesin air ,it will LOSE ENERGY continuously DUE to air resistance . Thus ,mechanicalenergy of the pendulum decreases continuously with time . The FLUCTUATION is represented by curve