Question

The work done by the tension in the string of a simple pendulum in one complete oscillation is equal to

• A. Zero
• B. total energy of the pendulum
• C. P.E. of the pendulum
• D. K.E. of the pendulum

Answer 1

The correct option is A Zero

direction of motion in S.H.M. is perpendicular to force.
$\therefore f.r=0$
$\Rightarrow$ work done is zero