Recent content by riddle_me_phys

Oops, forgot attachment. Now attached.

Hey all! I think I have the problem within my grasp, just would like a second opinion to help me cross the finish line... Homework Statement Consider the following diagram of the bottle holder assembly (see attachment). The weight of the bottle is 11N, and the weight of the board is...

I know this is an older post, but I came across it while I was searching for practice questions on the forum. I've been using this site as a resource to practice my math/physics daily: www.learnerds.com They explain the solutions to the problems decently, so its helped me connect the...

For an object with a fixed mass that is rotating about a fixed symmetry axis, the angular momentum is expressed as the product of the moment of inertia of the object and its angular velocity vector: L = I w Ok, so fixed axis. I guess I was overthinking it =) Thanks SammyS!

The solution states that energy is conserved, so the answer is that, yes, tangential velocity does remain unchanged. There is no external torque in the system, so I see that the rule of conservation of angular momentum it breaks must be not being about the same point (center of the first...

www.learnerds.com It currently focuses on concept questions to help solidify conceptual understanding, which makes challenging questions easier to approach.

No energy input is required. The big/small tracks are tangential to each other. So the car is coasting on the bigger track, then at that connection point, naturally transitions into the smaller track. Somewhat similar to a figure 8.

This is another one of those concept problems where if I think about it one way, it makes sense, but if I think about it another way I don't reach the same conclusion...again, any clarifications in explaining this would be much appreciated. A streetcar is freely coasting (no friction) around...

Thanks collinsmark, Rellek, and rude man for the clarifications! Collinsmark, I very much appreciate you taking the time to write out that explanation. Regarding the linear acceleration problem, I accept that Δd1 will be greater than Δd2, but how were you able to conclude that the center of...

Hey all, I'm brushing up on some physics in my spare time, and I was wondering if someone knowledgeable here could help me clarify the reasons behind a couple answers...much thanks in advance! =) Question 1) The greatest linear acceleration of the center of mass of a baseball bat will be...