I bet YOU cant answer this question (1 Viewer)

[Squirrel]

so in that stupid pendulum question

why do you graph L against T squared. whats the point of that?
and also, what can you obtain from the line of best fit in that graph.?

basically its the question from last years paper straight after the multiple choice.

and what do you to that formula to make it so you can put the values in? and wat values do you put in?

fair dinkum, who needs these flamin pendulums anyway whats the point when we already know the value of g.

 

[...]

isn't becasue something to do with the shape of the originial graph where it was a hyperbola or a parabola?

 

[Squirrel]

thanks. ill write that.

does anyone else know ?

 

[SmokedSalmon]

You graph T against L so you can find the value of g... that is the whole point of the experiment.

T = (4pi/g) L

The slope is 4pi/g, therefore you can find g.
T can be found very accurately by doing 20 swings (to and fro)
L can be known within 0.1%, so g can be known very accurately.

This is the easiest and one of the most precise method of finding the value of g.

 

[Excalibur]

Mad shit salmon boy if that q comes up you just got me a mark

 

[Squirrel]

So, why wouldnt you just use

T = 2pi sqrt(l/g)

whats the point of squaring everything?

 

[Squirrel]

Oh i get ya
cheers

 

[iH]

Originally posted by Excalibur
Mad shit salmon boy if that q comes up you just got me a mark

hehe. salmon boy....hehe den...good luck in physics everyone!

it'll be fine. just make sure you remember that G = (u2 + v2)/r2 and you'll be fine!!!

Sam

 

[SmokedSalmon]

hehe you too sam.
goodo Squirrel