Oxford PAT 2016

Thank you for the reply. Yes, the answer is the same. Average density of cloud is less than that of air. Small droplets so large surface area so high viscous drag so they tend to be floating forever in the same way as does the dust particle in air.

The question comes from the book called " Physics Olympiad: Basic to Advanced" which I downloaded yesterday.

Edit: the name of the book is " Physics Olympiad: Basic to Advanced Exercises"

following are the exact statements from the book.

Thank you for the reply. Yes, the answer is the same. Average density of cloud is less than that of air. Small droplets so large surface area so high viscous drag so they tend to be floating forever in the same way as does the dust particle in air.

The question comes from the book called " Physics Olympiad: Basic to Advanced" which I downloaded yesterday.

Edit: the name of the book is " Physics Olympiad: Basic to Advanced Exercises"

following are the exact statements from the book.

Sorry but you seem to be extremely well prepared especially in terms of the Olympiads, are you by any chance doing them or have done them?

We only need to learn the top half of this table for PAT and interview, right? (not cot, sec or cosec)

Yup.

The syllabus says:

"Knowledge of the values of sin, cos and tan for angles of 0, 30, 45, 60 and 90 degrees (and angles offset from these by multiples of 90 degrees) may be assumed."

What does the angles offset mean?

Which papers would you guys recommend that I should do from the physics olympiad ones? Are the AS ones alright or should I look into the A2 ones too?

Guys where would we have to choose if we want an open college or if we want to pick a Uni? I don't see that option on ucas?

Thanks for the inspiration mate. Good luck to you too.



Studying elementary machines more thoroughly is a good idea. You could be more cautious about this when you see more numbers of wire.
Just a quick question for you to check the concept.

You have a mass attached to a pulley. A rope passes through that pulley and suspends the pulley. The two sides of rope are vertical.

- To the left of the pulley rope is released at the rate of 3 m/s and to the right the rope is pulled at the speed of 12 m/s.

Find with what speed and in what direction does the mass move.

Is the ans up by 9?

No the answer is up by 4.5 . Same concept here. You need to divide by 2 because there are 2 ropes.

I'm not really following I'm sorry /:
You said one rope goes down by three and another is pulled up by 12 I think? So what our saying each rope is giving 4.5? /:

Could you draw the scenario out for me

Np !

I am referring to the problems like this:

See page 13, post 253 and 254 of this thread for details.

Hey!

Are there any resources for learning and practicing such pulley system problems? Especially multiple pulley systems of different diameters (quite bad that these :P).

Hi guys do we need to know the compound angle formulas? Thanks