Predictions for this year's Unit 3 Exam

[ttn]

It's something about using a component of the normal force so that you're not solely relying on friction.

[xZero]

the normal force will act as a force which helps the car to stay in a circular motion

[jinny1]

somebody test if tonez equation is right.

[Vincezor]

somebody test if tonez equation is right.

I think it is correct (I remember seeing it in the Jacaranda Physics textbook) however I am yet to see a question which incorporates this friction into a question, as they all they say "without having to rely of sideways frictional force" or something along those lines, which indicates you don't need to take that into account.

[ttn]

somebody test if tonez equation is right.

I think it is correct (I remember seeing it in the Jacaranda Physics textbook) however I am yet to see a question which incorporates this friction into a question, as they all they say "without having to rely of sideways frictional force" or something along those lines, which indicates you don't need to take that into account.

Yeap it is in the Jacaranda book, but the problem was with the NormalForce.

Do we treat it as mgcos(theta) or just mg.

[yawho]

you may see it in a few days

[forumguy]

What's the difference between

Fnet = Frcos(theta) + Nsin(theta)
and
Fnet = mgtan(theta)?

[Asx4Life]

Banked Curves
Fnet = Frcos(theta) + Nsin(theta) - Horizontal component
Ncos(theta) = Frsin(theta) + mg - Vertical component

[ttn]

What's the difference between

Fnet = Frcos(theta) + Nsin(theta)
and
Fnet = mgtan(theta)?

Second one doesn't deal with friction.

[ttn]

Banked Curves
Fnet = Frcos(theta) + Nsin(theta) - Horizontal component
Ncos(theta) = Frsin(theta) + mg - Vertical component

What can the vertical one be used for?

and what is the value of 'N' exactly?

[DisaFear]

There better not be any hard pulley questions

[soopertaco]

There better not be any hard pulley questions

Which exams have pulley questions? i haven't done enough exams to see any D; ... wait no i've seen one; but still which exams?

[ttn]

Apart from VCAA's one, I've only seen it in TSSM 2011.

edit: just found one that's a bit more complicated, it's on Insight 2010.

[soopertaco]

Oh okay thanks!

[examsman]

Ok, guys, I only have a few questions before my knowledge of the course is more or less 100% complete.

How do I find design angle etc for a banked curve when friction is acting as well as a component of the normal reaction force? In past papers students have more or less hacked banked curves with the tan formula etc and I have a strong feeling this year they will test us on this...

When an input signal is given and it is not correctly biased with respect to the vout-vin characteristic. Do we bias it about the quiescent point or do we sketch the output signal as just being massively distorted?

Do photodiodes with incident light actually produce current or simply allow more current to pass through?

Thank you everybody!!!!!!