The aim of this experiment is to find the ratio P defined in part (d) by using a simple pendulum.
Suspend the pendulum bob with its upper part of the string fixed on a retort clamp as shown in figure below. Make a knot Nat a distance of L =10cm from the bob B. While X is the distance between the point of suspension S to a knot N on the string
Set X=60cm and pull the bob aside at a small angle so that it can start swinging vertically
(a) Record the time t for 30 oscillations of the pendulum bob
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