Answer:
0.091 sec
Step-by-step explanation:
f = frequency of oscillation of the mass attached to the spring = 11 Hz
T = Time period of oscillation of the mass attached to the spring = ?
Time period and frequency of oscillation of the mass attached to the end of spring are related as
![T = (1)/(f)](https://img.qammunity.org/2020/formulas/physics/college/wqpy9s9ewddptrdu601cp7m9jiqo73sa9k.png)
Inserting the values
![T = (1)/(11)](https://img.qammunity.org/2020/formulas/physics/college/616gqnsrlb19p155jc47o9a2py84cs3700.png)
T = 0.091 sec