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thanks heaps for answering the question, but could you explain to me the reason as to why there is a reaction force perpendicular to the normal force on c?.

not sure about questions which relate to the conical pendulum but use a pole instead of a string. i remember my teacher saying something about poles in that they can both pull and push, however i am not sure as whether it for this reason or not that they have a reaction force on top of the...

thankyou for your help, but is this the only method of solving?

i cant seem to get this question a particle is to be projected with a speed of 25m/s from the floor of a horizontal tunnel of height 20m. taking g as 10ms^-2, find the greatest horizontal range that can be attained in the tunnel.

Re: 2012 HSC MX2 Marathon i am going to rep you for this very intuitive method(me thinks). avoids allot of the tedious trigonometry i usually use for these types of questions.

thankyou to everyone, espicially nooblet94.

sorry so why is it that when you replace (pi/2) with (3pi/4) the center becomes (0,-i). and how do you find the radius of this too.

how would u find the center of the circle and radius when defined as. arg(z-2)-arg(z+2)=(pi/2). thankyou

oh ok i was brain dead, since i didnt find the equation of the circle just geometrically interpreted and ended up drawing it so that it didnt cut the origin. thanks spiral for everything.

yeah i did all that i just dont get why it crosses the origin. sorry. EDIT: i understand that you can use Pythagoras to see that it cuts the origin, but how at first glance did you know it cut the origin.

i am having troubles sketching the locus of this inequality to find the range of modulus. the question is modulus of(z-sqrt(3)-i)=2. i might be brain dead or something but why does this graph cut at the origin, thanks.

but i am not requesting the papers just the solutions. :drink:

i was wondering if someone can give me cssa solutions, since i have the papers but not the solutions. i need 2010, 2009, 2006, 2005 and 2004. thankyou very much i just need to check my answers to the complex number sections.

$0 as of this moment. might however be getting a MX2 tutor depending on how i feel about it.

my teacher said that it depends on how the question is written. if it says explain why blah blah then you have to recite the entire statement BUT if it says show then you can simply say alternate angle theorem,

sanical and spiralflex are you getting these umat question from online or from books. if it is online do you mind sending me the links to where you are getting them from. thank you.

second one isnt actually that hard. all you have to do is basically use sum and product of roots knowing that roots of the differentiated equation represent the x-coord of the max/min turning point, get it?.

repped both, i originally had the differentiated equation just didn't realize to use the discriminate seems kind of stupid now.

yes thanks that was helpful, kinda what i tried at first. i will give it another try and if i still cant get it post up again.

prove that the graph of <text>y=ax^{3}+bx^{2}+cx+d has two distinct turning points if b^{2}> 3ac. hence find the values of a,b,c and d for which the graph formed has the turning points at (0.5,1) and (3/2,-1). thankyou.<text></text></text>