# Search results for query: *

1. ### B Impulse and distance from the axis of rotation

I am having trouble relating torques and forces. I can convert a force to a torque, but I am having difficulty conceptualizing how I can do the reverse (in terms of when it would be appropriate to actually do that). I asked about the baseball bat hypothetical because I was curious if there was...
2. ### B Impulse and distance from the axis of rotation

I realize that my responses were flustered and needlessly rude, so I apologize. I am going to take you up on your offer if you are still willing, but first I am going to figure out how to best reexpress my question. I think I am making the mistake of talking strictly about my intuition and being...
3. ### B Impulse and distance from the axis of rotation

I genuinely appreciate it, and I apologize that I cannot communicate more effectively otherwise I would consider the offer. I hope that you enjoy the rest of your day.
4. ### B Impulse and distance from the axis of rotation

I formulated the problem using conservation of angular momentum and treated the system as objects with moment of inertia as stated above. I am basing my logic off the logic that was used in a textbook. Angular collisions were never described in any detail in that book, and my ability to parse...
5. ### B Impulse and distance from the axis of rotation

I apologize for the low quality post. I will figure it out another way.
6. ### B Impulse and distance from the axis of rotation

I'm trying to model the linear collision of a bat and a ball using the conservation of angular momentum. The ball is a point particle with at rest wrt the axis of rotation, and the bat is being treated as a rod of negligible radius. I have had to work through several problems involving a ball...
7. ### B Bug walking around the perimeter of a lazy susan (hypothetical)

Bug is on lazy susan, lazy susan is on the bearings. For added context, this is a lazy susan (a rotating tray, or turntable) EDIT: The torque from friction on the bug is the same as the torque from friction on the table, which would have been obvious earlier if I thought about them for more...
8. ### B Bug walking around the perimeter of a lazy susan (hypothetical)

Given a bug that's walking counterclockwise around on the surface of a lazy susan (which itself is sitting on frictionless bearings), wouldn't the the friction between the bug and the lazy susan (which is needed to be able to walk) apply torque (no matter how negligible) that accelerates the...
9. ### B Torque applied by a continuous mass instead of point particle

After doing a bit of reading, I realize that I am jumping the gun and there are concepts I haven't learned yet that I'll cover soon. It seems one of those concepts (Equilibrium) will address the confusion I am having right now, so I probably could have avoided the trouble of making this thread...
10. ### B Torque applied by a continuous mass instead of point particle

Thank you! I noticed that the torsion spring I wanted to use wasn't the only kind so I appreciate knowing the proper name for it. My only concern is that I am not sure how I'd accomplish that without bending and possibly fatiguing the spring arm. Maybe with the actual materials in front of me...
11. ### B Torque applied by a continuous mass instead of point particle

I made a very crude drawing, but I think that we are roughly thinking along the same lines. and for reference the spring I am going for (which I'm sure you are already aware of, but I need to give context to the terrible thing I just drew) I had figured that I would use rotational work to find...
12. ### B Torque applied by a continuous mass instead of point particle

A few weeks ago when I was working through the chapter (in Fundamentals of Physics), I had a difficult time getting a handle on how to actually use integration to calculate the CoM of rigid objects. I feel like the book brushes past it very quickly, and I have had trouble finding a source that...
13. ### B Torque applied by a continuous mass instead of point particle

I haven't gotten to the next chapter on equilibrium, so maybe the intuition will click into place after I read through that. Would the same principle apply when working out the net torque applied by a torsion spring along a length of wood (ie the mini catapult thing I was thinking of earlier)?
14. ### B Torque applied by a continuous mass instead of point particle

I came across this 'problem' when I was trying to think about how a torsion spring would apply torque in something like a miniature catapult. I understand that in the context of something like turning a wrench, we can find the net torque on the wrench by treating the hand applying the force as...
15. ### B Confusion while trying to build intuition of centripetal force

The question is as realistic as any of the questions I am being asked at my level, so I'm okay with the understanding I think I have. For now cars are just boxes with friction, hopefully one day I'll be able to work with further complexity. I appreciate the time and patience you spent on this...
16. ### B Confusion while trying to build intuition of centripetal force

I spent some time working through some problems and rereading this thread, and hopefully that did some good. I drew this chickenscratch really quickly and was curious if you felt that it was roughly accurate? I only did the forces for one of the front tires for simplicity, and I'm having a bit...
17. ### B Confusion while trying to build intuition of centripetal force

Unfortunately it would seem that my inability to communicate and my horrendous attempt at packaging several of my problems into one question has been my undoing here. The question in the image uses static friction, and I have found other explanations using static friction as well. I have asked...
18. ### B Confusion while trying to build intuition of centripetal force

Thank you all. This post is embarrassing and I understand less about the situation than I initially did, so I apologize. I'm not sure where the disconnect is happening so I can't ask for any more help than I already have, but I appreciate the effort nonetheless and will continue to work through...
19. ### B Confusion while trying to build intuition of centripetal force

Please dumb it down for me. Are you saying that the centripetal force during a car's turn is not caused by static friction?
20. ### B Confusion while trying to build intuition of centripetal force

As I understand it, when a body undergoes uniform circular motion its velocity does not change in magnitude but instead direction. This change in velocity, or acceleration, is directed inward towards the center of the circle. If a body was not experiencing a net centripetal acceleration, then...
21. ### B Predicting types of collisions

I appreciate the succinct response. I'm amazed I couldn't find it with a simple google search, but after doing some reading on COR the things are a fair bit more intuitive. I'm sure I'll confuse myself with it in a day or two though.
22. ### B Predicting types of collisions

Thanks! And yes, elastic vs inelastic. From what I understand all real life collisions are some degree of inelastic, with elastic collisions being useful mainly as an approximation. Assuming I understand that correctly, I wanted to know what physically determined that 'degree of...
23. ### B Predicting types of collisions

I've been working through Chapter 9 of Fundamentals of Physics (Center of Mass and Linear Momentum) and while I think I generally understand the different types of collisions, I notice that all of the problems state (or heavily imply) the type of collision after it has happened. Does predicting...