anything but pendulum (1 Viewer)

[paki_diva]

we got this assignment where we have to do three experiments to work out the g. First has to be the pendulum prac. second...we did this prac with balls of diff. sizes rolling down little slides or sth...third one...we have to chose our own. What can I do (other than pendulum and slides) to find the 'g'??? Any ideas?

 

[currysauce]

damn, we got the same thing 2day, cept we just doing the pendulum thing

 

[Xayma]

There is a water drip one, which is in Jacaranda if I remember correctly, bit hard to perform at home however.

 

[paki_diva]

nopes...couldn't find it in Jacaranda

 

[aim54x]

that is hard, i didn't have to do this one, i'll look round c wat i can find, u have to observe and calculate right?

 

[Xayma]

Ok the water drip thing involves.

Filling a burrete and having it about 1.5m off the ground, adjust the flow rate so that a drop leaves as soon as the one preceeding it hits the pan. Now you need to make sure that there is a near constant amount of water flow (continually filling it up).

Now count the number of drops that go in 60 secs.

Then get the average amount of time it takes for a drop.

s=ut+1/2*at²
u=0 (as no initial velocity)
1/2*at²=s
a=2s/t²

Where s is displacement ie height.

 

[paki_diva]

that is hard, i didn't have to do this one, i'll look round c wat i can find, u have to observe and calculate right?

right...

no one else i know has to do this asign...damn our teacher. he's never in class & gives the hardest pracs eva.

 

[paki_diva]

s=ut+1/2*at²
u=0 (as no initial velocity)
1/2*at²=s
a=2s/t²

Where s is displacement ie height.

wht's 'sup'?? so how do i find 'g'? Do i have to graph something like the pendulum one or should i get a direct answer?

btw...thanks heaps

 

[Xayma]

wht's 'sup'?? so how do i find 'g'? Do i have to graph something like the pendulum one or should i get a direct answer?

btw...thanks heaps

Sup is just superscript it is just to put the 2 up.

Acceleration (a) is gravity.

Direct answer but you need to get the average time.

 

[paki_diva]

ok...i get it...thanks a lot...i'll try it at school and c wht happens