Another rotation problem -- Acceleration of a ring rolling on a surface

  • Thread starter Thread starter palaphys
  • Start date Start date
AI Thread Summary
The discussion centers on a physics problem involving a rotating ring on a surface, specifically analyzing the acceleration of the center, the frictional force from the ground, and the normal reaction when the ring's geometric center has a velocity of $$ \sqrt{gR} $$. Participants are encouraged to provide their attempts at solving the problem to facilitate guidance. The conversation emphasizes the importance of showing work to receive constructive feedback. The thread also references a related discussion for additional context.
palaphys
Messages
248
Reaction score
14
[Mentors' note - this question was spun off from https://www.physicsforums.com/threa...urface-but-with-a-twist.1078618/#post-7243282 which contains the homework template information]

I'm not sure if I can add on by adding a similar question, if I am not allowed someone please tell me.

A ring is rotating as shown in the figure. At that particular instant when the velocity of the geometric center is $$ \sqrt{gR} $$ find the
1. Acceleration of center
2. Frictional force from ground
3. Normal reaction
 

Attachments

  • Screenshot_20250217-184445.png
    Screenshot_20250217-184445.png
    18.2 KB · Views: 42
Last edited by a moderator:
Physics news on Phys.org
palaphys said:
[Mentors' note - this question was spun off from https://www.physicsforums.com/threa...urface-but-with-a-twist.1078618/#post-7243282 which contains the homework template information]

I'm not sure if I can add on by adding a similar question, if I am not allowed someone please tell me.

A ring is rotating as shown in the figure. At that particular instant when the velocity of the geometric center is $$ \sqrt{gR} $$ find the
1. Acceleration of center
2. Frictional force from ground
3. Normal reaction
Where is your attempt?
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Trying to understand the logic behind adding vectors with an angle between them'

Thread 'Trying to understand the logic behind adding vectors with an angle between them'

My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
View full post »

Similar threads

Rotating ring on a rough surface- but with a twist
4
Replies
151
Views
4K
Difficult problem in Rotational Mechanics JEE 2017 Comprehension paper
Replies
1
Views
1K
Why is the direction of kinetic/static friction up a ramp?
Replies
7
Views
1K
Rolling on a plank which is resting on friction less surface
Replies
12
Views
3K
Ring and solid sphere rolling down an incline - rotation problem
Replies
8
Views
3K
Acceleration of system related to rolling motion and pulley
Replies
35
Views
4K
How can we model a rolling truck on an incline using rotational motion analysis?
Replies
24
Views
2K
Friction Required for Billiard Ball to Roll without Slipping
2
Replies
60
Views
4K
How Does Roughness Affect the Time Period of a Ball Rolling on a Vertical Hoop?
Replies
1
Views
1K
Rolling without slipping problem
Replies
42
Views
3K

Hot Threads

Recent Insights

Back
Top