Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Introductory Physics Homework Help
The position of a point in 2 rotations with 2 axes
Reply to thread
Message
[QUOTE="Gh778, post: 5219200, member: 398385"] Hello, I simulated it on Ansys Spaceclaim. It's ok, a fixed point on the disk moves up/down like I thought (altitude from the ground). The disk rotates around itself without friction and even at start there is no rotation around itself but the angular velocity is lower than the support. The support rotates at ##\omega_0## The video of the simulation, I drawn a fixed black circle on the support to look at the rotation of the disk around itself: [MEDIA=youtube]Pjc4dIf1aWI[/MEDIA] The angular velocity (example, the angle from the vertical is at 62°): [ATTACH=full]181031[/ATTACH] The angular velocity of the disk (without friction) is ##cos(\alpha) \omega_0## with ##\omega_0## the angular velocity of the support, and ##\alpha## is the angle of the axis of the disk from the vertical. I understood why the disk rotates at start around itself. Like the disk rotates around its center of gravity and around itself it has more energy than it rotates around its center of gravity only. So the support must receives a torque at start. Maybe the torque is like that : [ATTACH=full]181032[/ATTACH] I'm not sure because I can reduce the thickness of the part of the disk in contact with the support. Have you an idea how the support receives a negative torque from the disk to have the sum of energy constant at each time ? [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
The position of a point in 2 rotations with 2 axes
Back
Top