AS Physics PH01 Unit 1

[Hamzeh S]

i wrote point inwhich max. gravity pull acts on it where is the center of the mass ?? i marked on the head

center of mass is in the middle of the object

 

[Cell_ar]

for calculating G in the camera question was it ok to say that after all data is collected we can plot a graph of v squared against s and the gradient is 2a? (a=acceleration)

 

[BeBo^.~]

i wrote this too about the motor oil Q i mentioned viscousity iis it right

 

[rafat hija]

for calculating G in the camera question was it ok to say that after all data is collected we can plot a graph of v squared against s and the gradient is 2a? (a=acceleration)

it's t squared against s not v squared and yeah it's okey

 

[Cell_ar]

i wrote this too about the motor oil Q i mentioned viscousity iis it right

yeah i said at higher temperatures viscosity decreases and vice versa

 

[Hamzeh S]

yaa

 

[BeBo^.~]

yup okay what about the vector in the boat Q hw shold we draw it

 

[Hamzeh S]

yup okay what about the vector in the boat Q hw shold we draw it

didnt do it :S

 

[Tilluu]

How were you supposed to that in which you had to show that energy is 0.06J ?

 

[BeBo^.~]

I found area under the graph about the horizontaland vertical velocity of that Q abt guy jumping off ??

 

[rafat hija]

How were you supposed to that in which you had to show that energy is 0.06J ?

AREA UNDER GRAPH by drawing a rectangle on the graph divide by two( f*x/2)

 

[Tilluu]

I think its horizontal velocity was 24.2 ms-1...right?

 

[Hamzeh S]

AREA UNDER GRAPH by drawing a rectangle on the graph divide by two( f*x/2)

how did you get the extension ? i used 10-6.74 :S but i think it is 6-5.74 Times 2

 

[Tilluu]

AREA UNDER GRAPH by drawing a rectangle on the graph divide by two( f*x/2)

Ohh right !

 

[BeBo^.~]

About how to increase the height in last Q I guess?????
I wrote stretch more hence increase extension more energy

 

[Tilluu]

Which part?

 

[Hamzeh S]

How did u caluclate extesnion :O !:O! :O!!!! i said 10-6.74 wwill i get ecf ? :O :O

 

[Tilluu]

I did the same ! :O is it right?

 

[Hamzeh S]

i think its (6.74-5)*2 :S :S :S :S :

 

[BeBo^.~]

I did the same too. I'm talking about the last question about increasing the height in which marble thrown using the rubber