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On time:
1. A stop watch has a circular dial divided into 120 divisions. What is its count?
2. A simple pendulum completes 40 oscillations in a minute. Find its 
   a) frequency                                          b) Time Period
3. The time period of a simple pendulum is 2 seconds. What is its frequency?
4. A second's pendulum is taken to a place where acceleration due to gravity falls to 1/4th. How is the time period of the pendulum affected, if at all? Give reasons. What will be its new time period?
5.Compare the time period of two pendulums of length 1m and 9m.
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