describe an activity to show measurement of simple pendulum
Answers
EXPERIMENT :- Measurement of g: Use of a simple pendulum
PROCEDURE:
The period T of a simple pendulum (measured in seconds) is given by the formula:
T=2 π √ (L/g) (1)
T = time for 30 oscillations (2)
30 oscillations
using equation (1) to solve for “g”, L is the length of the pendulum (measured in meters)
and g is the acceleration due to gravity (measured in meters/sec2
). Now with a bit of
algebraic rearranging, we may solve Eq. (1) for the acceleration due to gravity g. (You
should derive this result on your own).
g = 4π²L/T2
1. Measure the length of the pendulum to the middle of the pendulum bob. Record
the length of the pendulum in the table below.
2. With the help of a lab partner, set the pendulum in motion until it completes 30 to
and fro oscillations, taking care to record this time. Then the period T for one
oscillation is just the number recorded divided by 30 using (eq. 2).
3. You will make a total of eight measurements for g using two different masses at
four different values for the length L.
Note: π = 3.14, 4 π² = 39.44 3 L (meters) mass Time for 30 oscillations Period T (seconds) T² g = 39.44L/T2
Average value of g = __________