Recent content by Oklid

I will draw it in a few hours. I get that. But If you have read the conversation between me and haruspex, can you explain the below question? Thank you all by the way.

I believe, of course. But here I have no problem with the free body diagram. The masses are okay but I can't show the pulley as using a free body diagram. As I said I have a confusion.

And there is no friction.

Wait a minute. The string was tied to the rod. But there is no connection between string and the pulley? Am I wrong?

Downward. Because of 3rd law of Newton.

Upwards.

The force magnitude on the rod must be T and the force vectors on the rod must be upwards.

Still can't imagine in my head, I am sorry for that. And have you seen the another question (a cart and the pulley system) in #12? It explains my struggle.

Maybe, it could be more clear. The string has a tension, right? So they say, the string exerts force on the pulley. But in which direction? Still don't get it. The reason that I want to know this, or figure it out, I have another question. Maybe it is better to open a new thread, But to...

Yes, that's right. The suspended weight doesn't exert a force T by the way. I had drawn this to show tension with initial (T). The pulley were correctly drawn but the answer I drew it in case anyone draws a something like that directly without explanation. Yes that was true. But I can't get...

There is a misunderstanding. I think, you're talking about the second image that I upload. It is not the question, the first one is. The second image that I upload to show the correct answer behalf of you, if you have written the answer directly. I've edited it.

I didn't get quitely. Why would the pulley accelerate? It is fixed to the floor. And which forces are they that acting on the pulley, I'd like to know. Second things, thanks for answer.

Homework Statement In the figure below is shown the system below are shown two blocks linked by a string through a pulley, where the block of mass m1 slides on the frictionless table. We assume that the string is massless and the pulley is massless and frictionless. Show the forces ( as...

I think I know what my difficulty is. When I wrote the equations, I decided the datums were unchangeable so the depth of masses below top pulley seemed unrelated to me. I think I should seek more. Thanks for helping, sir! Edit: Spelling.

I didn't mention that, I know it. I said when we know the depth of B below top datum, How I use it in my equations? B has different datum point? Edit: L2= Sc+Sb L1= Sa+(?) L1-Sa=(?) Edit: I mean, yes we know that the depth of B below the top pulley is L1-Sa+Sb, so How can I...