Recent content by James Brown

Well I'd love to see Richard Feynman talking about this

Ahh OK then I got nothing to say

Be serious can you?

Now, you are holding a phone and pushing it. Well I suppose you are pushing it horizontally, then will you hold your phone without your fingers? Definitely not. So when your fingers is holding your phone friction between your phone and your fingers will prevents the phone from bouncing back. If...

How is it possible that friction makes car turn? From what I know, frictional force is acting along to the direction of the wheel turns. When the car turns, the direction of the frictional force now act opposite to the direction of the wheel turns! I'm sure if you rotate the steering wheel to...

In the definition of entropy, there are two. One is about the degree of randomness and one is about energy that is not available to do work. What is the relationship between them?

This question is about a FRICTIONLESS plane

Hi I'm James. I'm currently a high school student with only a knowledge of basic Physics. Or I may not have familiarize the basic of Physics. I like thinking Physics and Maths questions by myself but I have a lot of obstacles. I hope one day I can improve my Physics and Maths intuition and...

I'm wondering, will this website provide some kind of teaching materials? I found that I'm quite struggled in high school physics and can't think of the reason of something behind by myself. I really hope that I can learn them with ease and deal with the basics one day then move on to University...

Indeed it will... There is friction acting on it

Ahh I take back all what I said about the rod, it does not contribute to the question

Ok there is a conclusion here. Actually, the rod will topple or not depends on how you place the rod. If you place the rod perpendicular to the slope, then yes, like @Baluncore said, the rod won't topple. Although it looks incredible, but if you think deeply it make sense. The reaction force...

Ok so, does this means that the force that the rod to rotate is mg while the force that cause the rod to accelerate downward is mgsinx right?

So the force that cause the rod to topple when there is no friction is the reaction force acting on the rod right?

Which means that if the rod is placed like that:(figure below), the rod won't topple? If the force that act on the rod is mg, the rod will topple right?, but if the force that act on the rod is mgsinx then it will make sense that the rod won't topple