PDF chapter test TRY NOW

Measurement of time period:
  1. Set up a simple pendulum as shown in the figure with a thread or string of length nearly one metre.
  2. Switch off any fans nearby.
  3. Let the bob of the pendulum come to rest at its mean position.
  4. Mark the mean position of the bob on the floor below it or on the wall behind it.
    To measure the time period of the pendulum we will need a stopwatch.
  5. Now, hold the bob gently and move it to one side, to set it in motion. [Note that the string should be in stretched position not in loose condition].
  6. The bob is now released and not pushed from its displaced position.
  7. The time is noted when the bob is at its mean position or instead its extreme positions.
  8. Measure the time the pendulum takes to complete \(20\) oscillations.
  9. Record your observations in the given table format.
  10. Repeat the process and note the observations.
Length of the string \(=\) \(100\) \(cm\)
 
Time taken for
\(20\) oscillations (\(s\))
Time period
(\(s\))
\(20\)
 
\(40\)
 
\(60\)
 
 
Is the time period of your pendulum nearly the same in all cases?
 
, the time period of your pendulum is in all cases.