Pulley problems

[TotalDomination]

---

Members don't see this ad.

I can't freaking figure out pulleys. Anyone know of any good resources? I got EK physics 10001 464-471 ALL wrong and am going to whack something if I can't figure it out...and hurt my hand in the process so pwease help me. Thanks

 

[LaughingMan]

Really horrible title OP.

👎thumbdown

 

[UniBoy4]

I can't freaking figure out pulleys. Anyone know of any good resources? I got EK physics 10001 464-471 ALL wrong and am going to whack something if I can't figure it out...and hurt my hand in the process so pwease help me. Thanks

What do you not understand abou pulleys?

 

[4 lyfe]

Should we take the title seriously and notify the appropriate authorities?

 

[Gauss44]

Hooray for the new title!

 

[Pose]

Didn't a mother just recently post about the suicide of her medical student daughter? Tough times.

Oh, and I totally dig Chad's way of discussing pulleys. Get his videos.

 

[Temperature101]

I can't freaking figure out pulleys. Anyone know of any good resources? I got EK physics 10001 464-471 ALL wrong and am going to whack something if I can't figure it out...and hurt my hand in the process so pwease help me. Thanks

I had problem with pulley system as well, but after watching Chad's video on pulley in which he spent probably 1 minute explaining the trick about pulley. I did all these problems you stated on EK1001 and I only got the last one wrong.

 

[Mehd School]

Don't you just divide the force by the number of pulleys? That's the trick I learned in class. I may be getting that mixed up.

 

[circulus vitios]

Should we take the title seriously and notify the appropriate authorities?

It's clearly a joke.

 

[4 lyfe]

It's clearly a joke.

So was I.

 

[TotalDomination]

What do you not understand abou pulleys?

idk! I keep thinking its just force divided by number of pulleys (strings with opposing tensions) but i got them all wrong. I have chad on my comp, going to check with him and get back.

Apparently if it's one long pulley system in "series" tension doesn't change than if it was one. I get that. But the others problems....grr. ready to rip the book apart.

 

[miss chievous]

People need to relax. I thought the thread title was hilarious.

OP, the princeton review has an awesome section on pulleys.

 

[Dipraman]

idk! I keep thinking its just force divided by number of pulleys (strings with opposing tensions) but i got them all wrong. I have chad on my comp, going to check with him and get back.

Apparently if it's one long pulley system in "series" tension doesn't change than if it was one. I get that. But the others problems....grr. ready to rip the book apart.

Try BR. It was pretty helpful

 

[Captain Sisko]

Pulleys are straightforward. Tension is constant along a single string. Draw pictures. That's about it.

 

[Procyon]

Really horrible title OP.

👎thumbdown

I lol'd. Dark humour ftw. 👍

 

[LaughingMan]

I lol'd. Dark humour ftw. 👍

Eh I wouldn't consider this dark humor.
Just a silly/dumb title.

 

[Captain Sisko]

If OP were good at pulleys he'd know that the pulley should be stationary and the rope should be tied to the car!

 

[4 lyfe]

Yea the title doesnt make a whole lot of sense... unless of course the pulley where stationary... but the way its written it sounds that the pulley is tied to the back of a truck and he/she would be hanging off of it... but then you wouldnt need the car at all, since a pole or some stationary mounting material would suffice... and the acceralation of the car doesnt really fit in here, which would provide the tension... but of course then the pulley would have to be stationary on the floor not attached to the car or else you wouldnt get that tension...

Doesnt make a whole lot of sense... and OP needs some serious help with pulley's, as can be seen from the title.

 

[TotalDomination]

Yea the title doesnt make a whole lot of sense... unless of course the pulley where stationary... but the way its written it sounds that the pulley is tied to the back of a truck and he/she would be hanging off of it... but then you wouldnt need the car at all, since a pole or some stationary mounting material would suffice... and the acceralation of the car doesnt really fit in here, which would provide the tension... but of course then the pulley would have to be stationary on the floor not attached to the car or else you wouldnt get that tension...

Doesnt make a whole lot of sense... and OP needs some serious help with pulley's, as can be seen from the title.

In my head, this is how I imagined it: the one side of string tied to neck/head, then the string going over the pulley (which is tied to a tree branch of sorts above me), and the other side tied to car. I would at first be stepping on something such that there would be no tension in the string. but then i would kick that so tension equals mg. and i'm dead. but i'm actually not dead because this is hypothetical and i only wanted the car to be there because I wanted a maserati present in the scene somehow.

I do need serious help with pulleys though.