Need help understanding relative motion and frame of references

AI Thread Summary
Relative motion and frames of reference are crucial concepts in physics that describe how the position and movement of objects can change depending on the observer's viewpoint. Understanding these concepts often requires a solid grasp of both the theoretical and mathematical aspects involved. Resources such as educational websites, online courses, and physics forums can provide valuable explanations and examples. Engaging with specific problems can help clarify misunderstandings and deepen comprehension. Seeking targeted examples can facilitate a more thorough understanding of these fundamental principles in physics.
PhysicsKid0123
Messages
95
Reaction score
1
Okay guys, I still feel like I don't quite understand these concepts well enough. Do you guys have any websites or links to help me understand these concepts better? I feel like I only partially understand these concepts. I also feel like I partially understand the application of the mathematics to the corresponding physics - not the mathematics itself (I am a math major going to double major in physics soon). If you can give me brief explanations about these things, that would also be great appreciated.
 
Physics news on Phys.org
Can you post up an example of a question that's giving you that queasy feeling that you're only partially understanding the concepts? That will give us something to sink our teeth into.
 
The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
Thread 'Beam on an inclined plane'
Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...

Similar threads

Back
Top