Question

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

Answer 1

Since the tension and displacement are always perpendicular in a pendulum, therefore the work done by the tension in the string is zero.

Answer 2

ZERO

Explanation:

• Work done by the string of the simple pendulum during one complete oscillation is zero.
• Pressure in the string precisely drops the segment parallel to the string.  
• This leaves a net reestablishing power back toward the balance position as equivalent to zero.