# Using a simple pendulum to find the acceleration due to gravity

Topics: Harmonic oscillator, Pendulum, Resonator Pages: 3 (704 words) Published: January 8, 2014
﻿Using a simple pendulum to find the acceleration due to gravity/g Task 1
Aim: To find the acceleration due to gravity/g
Objective: To find the relationship between the length of simple pendulum and the period oscillation Hypothesis: The longer the length of the simple pendulum, the longer the period of oscillation will take. Variables:

a) Independent- the length of the pendulum;
b) Dependent- the time it takes for 20 oscillations;
c) Control - the mass of pendulum.
References
Ruslawati (Tuesday, 15 January 2013) Using a simple pendulum to find the acceleration due to gravity/g[Online] Available: http://fizik-ruslawati.blogspot.co.uk/2013/01/simple-pendulum-experiment.html,[24/10/2013] R Nave(Tuesday, 1 august2013) Simple Pendulum[Online]

Available: http://hyperphysics.phy-astr.gsu.edu/hbase/pend.html#c2,[24/102013]

Equipment/Apparatus:
Retort stand
Pendulum bob
Metre rule
Stop watch

Method
1) Set up the apparatus as shown in the picture above; a small brass bob must be attached to a piece of thread. And the thread must be held by a clamp of a retort stand as you can see in the picture. 2) The length of the thread must be measured by a metre rule, starting with the first measurement 0.9metres. The bob of the pendulum must be displaced in an acute angle and released as once you’ve measured the thread correctly. 3) The time of 20 completed oscillation, must be timed by the stop watch 4) The experiment was repeated by us using 10 different lengths 0 – 0.9metre

Health and safety assessment
Risk
How Likely (out of 10)
Prevention
If any equipment drops on your foot(as it is heavy equipment that is being used, which could damage your foot) 5
Wear protective shoes in the event/experiment
Playing around the equipment, (as you could trip up and hurt yourself.) 3
Don’t not play around and behaviour yourself while doing the experiment and keep your play time for after the...

References: Ruslawati (Tuesday, 15 January 2013) Using a simple pendulum to find the acceleration due to gravity/g[Online]
Available: http://fizik-ruslawati.blogspot.co.uk/2013/01/simple-pendulum-experiment.html,[24/10/2013]
R Nave(Tuesday, 1 august2013) Simple Pendulum[Online]
Available: http://hyperphysics.phy-astr.gsu.edu/hbase/pend.html#c2,[24/102013]