Answer:
Period of motion is 0.46 sec
Step-by-step explanation:
Object is undergoing SHM means object is moving from left to right and then right to left in a specific time called time period. As given object moves from left to right is 0.23 sec which is time for half cycle. Time period for one complete cycle is then
T=2t
T=2(0.23)
T=0.46 sec
Frequency of oscillation would be then

Maximum amplitude of oscillation is the mid point of between left and rght end point:
