describe briefly an experiment to prove the first law,second law and third law of simple pendulum
The three laws of simple pendulum are:
- Time period (T) is proportional to the length of the string (l).
- Time period (T) has no dependence on the amplitude of the oscillation of the pendulum.
- Time period (T) has no dependence on the mass of the bob.
- Take a bob. Tie it with strings of different length(l). Take at least 3 such strings. Measure the time period (T) of the pendulum in each case. Plot log(T) vs log(l). Fit a straight line. Find out the slope. It should be .
- With a bob and a string make a simple pendulum. Start the oscillation with different amplitudes and measure the time periods. Plot Time period vs amplitude. You will get a straight line parallel to amplitude axis.
- Use the same string for making pendulums with bobs of different mass. Measure the time periods. Plot Time period vs mass of the bob. You will get a straight line parallel to mass of the bob axis.