Physics 2 Pendulum Lab Report Pre Lab Questions

Anonymous
timer Asked: Feb 14th, 2019
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Question Description

experiment 2: Pendulum

I need answers for the attached pre lab questions, experiment questions, graphs and diagrams.

Physics 2 Pendulum Lab Report Pre Lab Questions
pendulum_1.jpg
Physics 2 Pendulum Lab Report Pre Lab Questions
pendulum_2.jpg
Physics 2 Pendulum Lab Report Pre Lab Questions
pendulum_3.jpg
Physics 2 Pendulum Lab Report Pre Lab Questions
pendulum_4.jpg
Physics 2 Pendulum Lab Report Pre Lab Questions
pendulum_pre_lab.jpg

Tutor Answer

Geontiry
School: University of Maryland

Hello buddy! I have attached the answer in a word document for you. :) Let me know if you have any edits or have any questions.

Last Name 1

Name
Instructor's name
Course
Date
Physics 2: Pendulum Lab Report
Pre-lab Questions
Answer to Question 1
Free body diagram of a pendulum while in motion is shown in the diagram below:

Answer to Question 2
For a pendulum at equilibrium we have tension in the string given by:
𝑇𝑠 = π‘šπ‘” = 0.15 π‘₯9.8 = 1.47 𝑁
Answer to Question 3
When you cut the string into half, the period will be shorter. This is because when you cut
the string by half, you reduce the length (L) by half. From the equation for getting the
period, the period is directly proportional to length as given below:

𝑇 = 2πœ‹βˆš

𝐿
2πœ‹
= ( ) √𝐿 = π‘˜βˆšπΏ π‘€β„Žπ‘’π‘Ÿπ‘’ π‘˜ = π‘π‘œπ‘›π‘ π‘‘π‘Žπ‘›π‘‘
𝑔
βˆšπ‘”
π‘œπ‘Ÿ 𝑇 ∝ √𝐿

Last Name 2

And so, decreasing the length by half, decreases the period by half.
Answer to Question 4
When you double the attached mass, the period will not change. This is because the period
does not depend on the mass attached to the pendulum but it only depends on the length
(L) of the string and the value of the gravitational field strength (g) according to the
following equation.

𝑇 = 2πœ‹βˆš

𝐿
2πœ‹
= ( ) √𝐿 = π‘˜βˆšπΏ π‘€β„Žπ‘’π‘Ÿπ‘’ π‘˜ = π‘π‘œπ‘›π‘ π‘‘π‘Žπ‘›π‘‘
𝑔
βˆšπ‘”
π‘œπ‘Ÿ 𝑇 ∝ √𝐿

And so, doubling the attached mass, does not change...

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Anonymous
Thank you! Reasonably priced given the quality not just of the tutors but the moderators too. They were helpful and accommodating given my needs.

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