A 321 g ball is tied to a string. It is pulled to an angle of 5.20 ∘ and released to swing as a pendulum. A student with a stopwatch finds that 16 oscillations take 16.5 s . How long is the string?
The Time Period is the time take for one oscillation. It is given as
l- Length of the Pendulum
g - Acceleration due to Gravity
From this formula we will calculate the length of the pendulum . Since the displacement is very small , we will ingrone the angle made by the pendulum. Also note that the period of the pendulum does not depend on the mass hanging at the end of the pendulum.
Therefore the length of the string = 0.2636 m
Hope this Helps!!
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