calculate the acceleration from gravity for each length of string and the two weights of the pendulum bob. Calculate an overall average value of g based on all your results. \
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
Using the results obtained for your periods, calculate the acceleration from gravity for each length of string and the two weights of the pendulum bob. Calculate an overall average value of g based on all your results.
\
Example calculation: = 10.1 m/s2
Sample calculation using one of your results above:
Data Table of Results using Averages from Above Data Table
L (m) Period, T Calculated g
Final average of calculated g =
Select one length of string from above and record three trials using a second bob of a different mass. If Newton’s Second Law is correct and your laboratory technique is good, the results you see in this table should be identical to the results for that same length of string recorded above in Data Table 1.
Step by step
Solved in 2 steps
