Posted: April 20th, 2022

Need help with simple pendulum lab

Question Assignment description

Lab
Task 10:  The Simple Pendulum
Teacher’s Overview
The pendulum is a superb illustrative
instance of simple harmonic movement. 
Walker’s Physics has a fantastic
anecdote of Galileo’s statement of oscillating chandeliers and his subsequent
experiments on the simple pendulum.  In
this lab, we are going to replicate Galileo’s experiment to realize perception into the
physics of the pendulum.  We’ll enhance on
the accuracy of his outcomes through the use of a cease watch as a substitute of our pulses to measure
the interval of the pendulum!
This exercise shouldn’t be primarily based on an eScience
experiment, though we are going to some materials from the equipment for the
experiment.  For additional background on
the pendulum, confer with Walker’s Physics,
Part 13-6.
Lab Directions
1.  ¨ Lower a one meter size of fishing line.
2.  ¨ Tie six washers onto the tip of the fishing line.
three.  ¨ Tie the opposite finish of the road to a characteristic hooked up
to a ceiling similar to a stationary ceiling fan. 
If this isn’t out there, you possibly can recruit an Helpant to carry the road
in a really secure vogue.
Four.  ¨ Measure the space from the holding level to the
heart of the washers.  That is the
efficient size of the pendulum.  Report
this worth within the desk beneath.
5.  ¨ Transfer the weights not more than 20 levels from
equilibrium and let go.
6.  ¨ With a stopwatch, time 10 intervals (full
oscillations).
7.  ¨ Divide the whole time by 10 to get the common interval
for this pendulum.  Report this worth in
the desk beneath.
eight.  ¨ Repeat steps Four-7 for 4 different lengths.  Advised lengths: 100 cm, 80 cm, 60 cm, 40
cm, 20 cm.  It’s good experimental
follow to randomize your trials.  For
instance, you might run on this order: 80 cm, 40 cm, 100 cm, 20 cm, 60 cm.
Take detailed
notes as you carry out the experiment and fill out the sections beneath.  This doc serves as your lab report.  Please embody detailed descriptions of your
experimental strategies and observations.
Date:
Scholar:
AbstractBackgroundObjectiveHypothesis
Introduction

Materials and Strategies

Outcomes

Information Desk

Size (meters)

Common interval, T (sec)

Common interval squared, T2 (sec2)

Plots/Assessment
Create a plot
of size (x-axis) versus common interval (y-axis).  You should utilize a program similar to Excel to
generate your plot.  Ensure that to obviously
label your axes and point out items.
Create a plot
of size (x-axis) versus (common interval)2 (y-axis).  Use Excel so as to add a linear pattern line.  Report the slope of the perfect match line.
Recall that
the interval of an excellent simple pendulum is given by the next relation:

Squaring each
sides of the equation offers us this relation:

Utilizing the
slope of your T2 versus L plot, decide the acceleration on account of
gravity.
Primarily based in your
outcomes, please reply the next questions:
1. 
How shut is your experimentally decided gravitational
acceleration to 9.81 m/s2? 
What are potential sources for error within the experiment?
2. 
For small angles, does the pendulum’s interval of oscillation rely
on the preliminary angular displacement from equilibrium?  Clarify.
three. 
Why is it a good suggestion to make use of a comparatively heavy mass on this
experiment?  What would you say to a
colleague that wished to make use of just one washer because the pendulum mass?
Four. 
Use
the relation of the interval of an excellent simple pendulum,  , to calculate the
ratio of the intervals of an identical pendulums on the Earth and on Mars.  Word:
The gravitational acceleration on the floor of Mars is roughly three.7 m/s2.

Conclusions
References

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