In a laboratory experiment with simple pendulum it was found it took 36 s to complete 20 oscillations when the effective length was kept that 80 cm. Calculate the acceleration due to gravity from these data.

Explanation

To calculate the acceleration due to gravity using the data from the simple pendulum experiment, we can follow these steps:

### Step-by-Step Solution:

1. **Determine the Time Period (T)**:
- The total time for 20 oscillations is given as 36 seconds.
- To find the time period for one oscillation, we divide the total time by the number of oscillations:
\[
...