Question

A pendulum oscillates 20 times in 2.4 seconds. The minimum time taken by bob pendulum to reach from one of the extreme positions to mean position is ?

Answer 1

TIME FOR 1 OSCILLATION =2.4/20=0.12

TO REACH FROM EXTREME TO MEAN POSITION HALF AN OSCILLATION IS COMPLETED....SO NOW;

REQUIRED TIME =0.12/2/2seconds =0.6/2 seconds=0.3s