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Posts posted by FizziksGuy
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SimuLAB: Coulomb's Law APlusPhysics Simulation
Lab handout to accompany the APlusPhysics Coulomb's Law mini-lab simulation activity.
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Submitter
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Submitted11/29/2017
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Category
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Draw separate free body diagrams for each of the objects, showing the direction of the forces on each object. For example, for the (2m) mass, you would have a dot with an arrow to the left (T3), and an arrow to the right (T2). The up and down arrows (forces Fn up and mg down) are balanced, so we'll focus on the x-direction. Writing Newton's 2nd Law in the x-direction, since T2 is in the positive direction, we'll leave it as positive, and since T3 is in the -x direction, it will be negative. Therefore T2-T3 = (2m)a.
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Which is certainly closely enough given various rounding / sig figs. You got it right.
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There are several explanations I think. I would probably use the kinematic equations (v0, v, delta_x, a, t), and use those to solve the problem. If you're getting stuck, can you post what you've done so far, and that will give me better information to assist you?
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Hi cjt100. So we can better assist, can you tell us what you've tried so far, and where you're getting stuck?
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This is a very common type of question, and the process of breaking up forces on a FBD into components and applying Newton's 2nd Law carries throughout the entire course. One of those things you've gotta learn. The "shortcut" that you learned isn't really a shortcut, and isn't something I'd recommend, as it won't carry through to other situations in which the third force isn't caused by gravity on a mass. I'd focus on learning how to draw free body diagrams, break forces at angles into components, and applying Newton's 2nd Law. It's the backbone of mechanics, and very important in further units as well. Good luck!
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Solution attached...
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Name: How to Get the Most Out of Studying: Part 5 of 5, "I Blew the Exam, Now What?"
Category: Introductory Concepts
Date Added: 2017-08-20
Submitter: FizziksGuy
How to Get the Most Out of Studying: Part 5 of 5, "I Blew the Exam, Now What?" -
Name: How to Get the Most Out of Studying: Part 4 of 5, "Putting Principles for Learning into Practice"
Category: Introductory Concepts
Date Added: 2017-08-20
Submitter: FizziksGuy
How to Get the Most Out of Studying: Part 4 of 5, "Putting Principles for Learning into Practice" -
Name: How to Get the Most Out of Studying: Part 3 of 5, "Cognitive Principles for Optimizing Learning"
Category: Introductory Concepts
Date Added: 2017-08-20
Submitter: FizziksGuy
How to Get the Most Out of Studying: Part 3 of 5, "Cognitive Principles for Optimizing Learning" -
Name: How to Get the Most Out of Studying: Part 2 of 5, "What Students Should Know About How People Learn"
Category: Introductory Concepts
Date Added: 2017-08-20
Submitter: FizziksGuy
How to Get the Most Out of Studying: Part 2 of 5, "What Students Should Know About How People Learn" -
Name: How to Get the Most Out of Studying: Part 1 of 5, "Beliefs That Make You Fail... Or Succeed"
Category: Introductory Concepts
Date Added: 2017-08-20
Submitter: FizziksGuy
How to Get the Most Out of Studying: Part 1 of 5, "Beliefs That Make You Fail... Or Succeed" -
Name: AP Physics C 2017 Mechanics Free Response Solutions
Category: Exam Prep
Date Added: 2017-08-20
Submitter: FizziksGuyWalk-through of the 2017 AP Physics C: Mechanics Free Response Questions. Questions can be found at https://apcentral.collegeboard.org/pd....
For more information, please visit APlusPhysics.com. You can also check out the new AP Physics C Companion: Mechanics, a guide book designed to assist in your studies of AP Physics C: Mechanics. Both black-and-white and full-color versions available from Amazon.com: http://amzn.to/2vPCvB3
*AP and Advanced Placement Program are registered trademarks of the College Board, which does not sponsor or endorse this work.
AP Physics C 2017 Mechanics Free Response Solutions -
Name: AP Physics C 2017 E&M Free Response Solutions
Category: Exam Prep
Date Added: 2017-08-20
Submitter: FizziksGuyWalk-through of the 2017 AP Physics C: Electricity and Magnetism Free Response Questions. Questions can be found at https://apcentral.collegeboard.org/pd....
For more information, please visit http://APlusPhysics.com.
*AP and Advanced Placement Program are registered trademarks of the College Board, which does not sponsor or endorse this work.
AP Physics C 2017 E&M Free Response Solutions -
Name: AP Physics 1 2017 Free Response Solutions
Category: Exam Prep
Date Added: 2017-08-20
Submitter: FizziksGuyWalk-through of the 2017 AP Physics 1 Free Response Questions. Questions can be found at https://secure-media.collegeboard.org...
For more information, please visit http://aplusphysics.com
*AP and Advanced Placement Program are registered trademarks of the College Board, which does not sponsor or endorse this work.
AP Physics 1 2017 Free Response Solutions -
Name: AP Physics 2 2017 Free Response Solutions
Category: Exam Prep
Date Added: 2017-08-20
Submitter: FizziksGuyWalk-through of the 2017 AP Physics 2 Free Response Questions. Questions can be found at https://apcentral.collegeboard.org/pd....
For more information, please visit http://aplusphysics.com.
Looking for help in AP Physics 2? Check out my course guidebook, AP Physics 2 Essentials: An APlusPhysics Guide! http://amzn.to/2vPMA0H
*AP and Advanced Placement Program are registered trademarks of the College Board, which does not sponsor or endorse this work.
AP Physics 2 2017 Free Response Solutions -
Wow, now that is impressive. Both the eulogy in verse, as well as landing on and returning from Duna. I've never seen a team accomplish that before. Major thumbs up!!!
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Very interesting approach -- looking forward to seeing how the final flight goes!
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Nice report, and I love the pictures!
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Following the death of poor Valentina Kerman on Duna, Nicholas Enterprises has had a lien placed against all future rocket purchases. This lien will be lifted when a full eulogy for Valentina is published in this forum. This eulogy must follow the strict format of an English sonnet (see details here: https://en.wikipedia.org/wiki/Fixed_verse )
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Definitely worth doing a bit of research on orbital maneuvering and how to dock... it's not particularly straightforward.
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Looks like you're making progress, but hopefully your pilot doesn't have to test out his parachute next time. Looks like you're having some trouble embedding pictures... please see me or one of your classmates for the next mission reports so we can see a visual record of your triumphs!
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Fantastic work. That's quite an accomplishment. Are you headed to Mun or another stellar object next?
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Congrats on your first working satellite! Looking good...
NEW FILE: SimuLAB: Universal Gravitation APlusPhysics Simulation
In Honors and Regents Physics
Posted
View File
SimuLAB: Universal Gravitation APlusPhysics Simulation
Interactive simulation to explore the basic relationships in Newton's Law of Universal Gravitation using Geogebra.