Question

A girl is sitting on a swing another girl sits by her side what will be the effect on periodic time of swing

Answer 1

The time period of swing remains unchanged if another girl sits beside the girl sitting on a swing.

The time period of oscillation of swing is given by

              $T=2\pi \sqrt{\frac{l}{g} }$

              T = time period of oscillation of swing

               $l$ = length of the swing

               g = acceleration due to gravity

From the formula we can conclude that time period is independent of mass of girl.

∴ The time period remains unchanged.

Answer 2

Answer:

Another girl sits by her side. There will be no change in the periodic time because the periodic time is independent of mass but depends upon length of pendulum and acceleration due to gravity at a place, which are not affected by sitting another girl on a swing

Explanation: