Rolling Motion Science Assignment Help. Rolling Motion Science Assignment Help.
I’m working on a physics question and need an explanation to help me learn.
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This video-based lab involves the study of several uniform objects of circular cross-sectional area. They roll down without slipping from the top of an incline. We wish to find the acceleration of each of them, using the conservation of energy.
1. Pre-lab Activities
- Let’s race a ring, a solid sphere, and a solid cylinder, down a ramp in pure rolling. Which one will win the race? Watch this video.
Link (Links to an external site.)
- What is the physics behind it?
- First, review the concept of the rotational inertia. Watch this video:Link (Links to an external site.)
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- Now, review the derivation of the rotational inertia for a solid cylinder (from Ch10): Icm=12mR2Icm=12mR2. For a ring (empty disk), all of its mass is on the outer surface, a distance R form the cm. Therefore Icm=mR2Icm=mR2, etc.
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- Now that you know the values of the rotational inertias, watch this video to see the reason why they will roll at different speeds:Link (Links to an external site.)
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- Here is a more detailed analysis that gives the acceleration of the solid cylinder:Link (Links to an external site.)
- Now repeat the same derivation for the general expression of the linear acceleration of common objects with circular cross-sectional area. The only difference is the X-factor in front of the expression for the moment of inertia for each type of object: Icm=X(mR2)Icm=X(mR2). You should get
acm=gsinθ1+X,acm=gsinθ1+X,
where θθ is the angle of inclination of the ramp.
- IIIn our lab, we analyze the video recordings of several objects with circular cross-sectional area as they roll down the incline without slipping. Logon to Pivot Interactives, and launch the lab, Moment of Inertia of Rolling Cylinders: Water-Filled Disk. Play the video and watch the disk rolling down the incline. If we measure the time tt it takes for the disk to cover a certain distance xx on the ramp from zero initial speed, then x=12at2x=12at2, from which we can find the experimental value of aa by fitting the curve of xx vs tt.
2. The Lab
- In Pivot Interactives, go to the lab, Moment of Inertia of Rolling Cylinders: Water-Filled Disk, and choose Full Disk, Close-up. Play the first video to see the details of the disk. This will help you determine the mass distribution of the disk, and hence the proper formula to use for its rotational inertia.
- Now switch to Data Shot at the bottom of the video screen. Deploy a scale, and rotate it to align with the orientation of the ramp. Also add a timer, and a protractor to measure the angle of inclination, θθ. See the screenshot below.
- Play the video, and pause it at various moments to record the distance xx the disk has moved along and ramp, and the time tt. Get a minimum of 6 sets of data (x,t)(x,t), before the disk reaches the bottom of the ramp.
- Repeat the same process for three additional configurations: Full disk (frozen), Empty disk, and Half-full disk.
3. The Lab Report
This is a formal, group lab report. It should include the following parts:
- Coverpage
- Equipment (no serial numbers are needed)
- Procedures
- Data: The angle of inclination of the ramp, and a set of (x,t)(x,t) for each of the four configurations.
- Analysis:
- Determine which of the four configurations is/are example(s) of pure rolling of a rigid object, to which the theories above applies. For each such case, plot xx vs tt, and fit it into a quadratic function. The theoretical curve is given by x=12at2x=12at2. Use this to determine aexpaexp, and compare with the corresponding value of athath obtained form the formula ath=gsinθ/(1+X)ath=gsinθ/(1+X), with g=9.80m/s2g=9.80m/s2. Find the percent error.
- For the case(s) which does not/do not satisfy the condition of pure rolling of a rigid object, find aexpaexpwith the same method as above and discuss qualitatively why you think the motion is faster or slower than a corresponding rigid object in pure rolling — for example, compare the cases of a disk full of liquid water vs a frozen disk. Do the experimental results agree with your qualitative prediction?
- Discussion: Possible sources of errors, etc.
Please save the lab report as a PDF or Word document, and upload it.
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Everything is there, please upload on time or before the deadline the document Humanities Assignment Help
I’m working on a social science question and need an explanation to help me understand better.
must read the source that I assigned below only. outside sources that I don’t provide are not accepted and I will request for a refund.!!!
i need it to be a an analysis its a literature class
The Velveteeen Rabbit is also a picture book, but it is obviously a picture book for older children. Describe three aspects of the story that indicate this book is meant for, say 7-11 year-olds rather than 3-6 year-olds. I suggest that you focus on the protagonist, the story content and the illustrations as the three aspects, but feel free to address alternative issues.
3 paragraphs
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Business memo-problem part Business Finance Assignment Help
I’m working on a business question and need a reference to help me understand better.
Around 400 words , Max 2 pages (double spacing, with 1 inch margins and 12 point font. Times new roman)
Read an article, Identify and understand the main and sub issues in the case study.Just finish the Problem part below for a business memo: ( no need for introduction and conclusion)
1- What are the issues/problems facing GE?(identify all the pertinent issues that management needs to address)
2- What is the primary problem in this case? Why have the problem you cited emerge?(perform whatever analysis and and evaluation)
To explain: first, you should list all the problems GE facing ( no matter big or small, list all); secondly , you should find a main problem and analyze/explain why it’s a main problem.
It is essential early on in your paper that you provide a sharply focused diagnosis of strategic issues and key problems and that you demonstrate a good grasp of the company’s present situation.Make sure you can identify the firm’s strategy and that you can pinpoint whatever strategy implementation issues may exist. Consider beginning your paper with an overview of the company’s situation, its strategy, and the significant problems and issues that confront management. State problems/issues as clearly and precisely as you can. Unless it is necessary to do so for emphasis, avoid recounting facts and history about the company.
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I’m working on a computer science discussion question and need an explanation to help me understand better.
(The purpose of this part of the comprehensive project is to use resources available to obtain industry averages for commonly used ratios.)
- Introduction(6-7 lines)
- Obtain the four-digit primary SIC (Standard Industrial Classification) Code and industry title for your company. Record the primary SIC code and industry title at the top of the Ratio Analysis Worksheet.
- Obtain industry averages for commonly used ratios in the current period. Industry average information is reported by industry title or SIC code.
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ANTH131 lab activity Humanities Assignment Help
I’m working on a anthropology writing question and need an explanation to help me understand better.
I’m working on a anthropology test / quiz prep and need guidance to help me learn.
You will be using the following Sketchfab 3D images of hominins to answer the questions in this lab. Link to the page with all the models: https://sketchfab.com/edgonzaleztennant/collections/fossil-hominins (Links to an external site.)
Links to each image below:
Homo rudolfensis cranium (Links to an external site.)
Homo habilis cranium (Links to an external site.)
Homo erectus skull from Dmanisi (Links to an external site.)
Homo heidelbergensis from Kabwe (Links to an external site.)
Homo neanderthalensis (Links to an external site.)
Homo sapiens idaltu (Links to an external site.)
Homo sapiens sapiens (Kennewick Man)
Observe the 3D models of skulls of Homo habilis and Homo rudolfensis and answer the following two questions:
1. What similarities and differences do you notice in the skulls? Think about features such as cranial vault size, width and slope of the face, post-orbital constriction, tooth size, etc.
2. Do you think there is good reason to separate these skulls into two species or should they be collapsed into a single species? Explain your reasoning behind your answer.
Question 2
Observe the Homo erectus skull from Dmanisi. List two features that you observe on it that identifies it as Homo erectus.
Question 3
Observe the Homo heidelbergensis skull and compare it to both the Homo erectus from Dmanisi and the modern Homo sapiens from Kennewick. In what ways is it similar to H. erectus? In what ways is it similar to modern H. sapiens?
Question 4
Observe the Homo sapiens idaltu skull and compare it to the modern H. sapiens from Kennewick, Washington. H. sapiens idaltu is considered to be one of the earliest modern human fossils; yet it still displays some features similar to archaic humans. Name one feature of the skull that would classify it as a modern H. sapiens. Name one feature that is more similar to archaic humans.
Question5
According to the short video “Stone Tool Technology of our Human Ancestors” what were the Oldowan tools discussed in the video used for?
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Skill Check Writing Assignment Help
I’m working on a biology exercise and need an explanation to help me learn.
In this exercise you will be learning more about the process of aerobic respiration. This metabolic process is central to the metabolism of plants and animals. As you saw in the pre-lab exercise, changes in these metabolic processes in humans can have a significant health impact. Although it would be ideal to be able to learn about the respiration process in humans, it is not practical from an experimental perspective.
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undefinedWe therefore will look at other organisms as our models for understanding the respiration process. In our case, we will use both a plant and an animal model; garden peas and mealworms will be used as the experimental organisms. In the first part of the experiment, you will be using garden peas to answer two questions about respiration. You will be watch two videos that examine carbon dioxide and oxygen and their role in respiration. You will propose a hypothesis that would answer your question and then watch a video that will show you the results of your measurements
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Management Question Business Finance Assignment Help
I’m working on a management project and need an explanation to help me learn.
I’m working on a management project and need an explanation to help me understand better.
1. Assignment Background and Description
To complete this assignment successfully, you will need to utilize the project idea and project charter developed in assignment # 1.
2. Project Management Plan
With your project charter approved, it is now time to start creating your project management plan. Part of this work is to create a container to hold all the components of your plan.
3. High-Level Requirements
Create a MS Word document with sections for each component of the plan. (See Week 1 for more detailed instructions on creating this document) Your plan should include all the items from Table 4.1 in the PMBOK (v6).
Project Management Plan that includes:
- • Scope baseline
- • Schedule baseline
- • Cost baseline
- • Any additional Project Manager’s Book of Forms templates for documents in table 4.1
Updated Project Charter: The charter must include all the elements in section 4.1.3 of the PMBOK. You must use the charter template from the Book of Forms as a starting point, but may tailor it (add components, not delete) to better suite your specific case scenario.
Updated Assumption Log: You also need to include an assumption log. At this point, the assumption log will contain any assumptions you have had to make in order to create your charter. The assumptions need to be clearly stated and be actionable. The actions should be assignable as tasks to those responsible for the assumption to be turned into a fact.
Group Activity Log: All group members must contribute equally in the assignment submission. Please see the assignment rubric for tools that can be used to demonstrate group participation.
4. Deliverables
A word document with two sections: 1. Project Management Plan 2. Project Documents. Use the rubric posted on the Moodle page as a guide to the expected contents. Please ensure you cite the sources of information in your assignment. You can use this site as a guide on how to properly cite your sources: http://www.plagiarism.org/article/how-do-i-cite-so… 2
A single MS Word document containing a “Title Page”, a “Table of Contents” generated by MS Word, a “Business Case”, a completed “Project Charter”, and an “Assumption Log”. See Moodle for templates of each document.
NO PLAGARISM
NEED BOTH 2.1 and sample project schedule below
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Philosophy Question Humanities Assignment Help
I’m working on a philosophy practice test / quiz and need support to help me understand better.
These are the topics covered:
CHAPTER 1 – Logic: Definitions And Distinctions
CHAPTER 2 – Philosophical Implications: What Is A Good Definition?
CHAPTER 3 – Logic: Categorical Propositions
CHAPTER 4 – Philosophical Implications: What Is Knowledge?
CHAPTER 5 – Logic: Deductive Arguments
CHAPTER 7 – Logic: Inductive Justification
CHAPTER 8 – THEORETICAL EXPLANATIONS IN SCIENCE AND PHILOSOPHY
We only have 1 attempt and the time limit is 120 minutes. 50 Questions in total. I have all day to answer. Thanks in advance.
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A Assignement Computer Science Assignment Help
I’m working on a computer science question and need an explanation to help me study.
- 1. Go online and find at least two sites with definitions of fast tracking and crashing a project schedule.
- Prepare proper reference citations for the sites you located, using APA style.
- In your own words, write definitions for project fast tracking and project crashing.
- Consider the plan you prepared for the software system testing project in question 1 above. If you were informed by management that you must reduce the planned duration of the project by five days, describe how you, as a project manager, could crash or fast track this project. Be specific in identifying exactly what could be changed in the project plan for each option.
- (continuation of question 2.3) If the request to speed up the project occurs after day 25 of the original schedule, what is the only option available?
2. A project to put on a major international sporting competition has the following major deliverables: Sports Venues, Athlete Accommodation, Volunteer Organization, Security, Events, and Publicity (which has already been broken down into pre-event publicity and post-event publicity.) Prepare a WBS for any single major deliverable on the list. Remember the 100 percent rule, and number your objectives.
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Speech Outline Writing Assignment Help
I’m working on a history report and need support to help me learn.
instructions:
For this speech you will answer the following question:
If you could have dinner with any historical figure, who would it be and what would you ask them
Use scholarly sources to support your choice. Scholarly sources include journal articles, periodicals, or books.
Requirements:
This outline needs to be in APA format. It should include the general purpose, specific purpose, introduction, two main points within the body, and a conclusion. Within the two main points please identify at least one scholarly source (other than an encyclopedia) to cite using APA in-text citations in your outline. You will also be expected to include a reference list in APA format.
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A single MS Word document containing a “Title Page”, a “Table of Contents” generated by MS Word, a “Business Case”, a completed “Project Charter”, and an “Assumption Log”. See Moodle for templates of each document.
NO PLAGARISM
NEED BOTH 2.1 and sample project schedule below