5052/Physics Paper 03 Practical
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range was 20cm- 75 cm for me . needle one i screw for method 1 focal length.. plus how to integrate? ppl who dun take amaths die la
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is all drop form 80 cm right.??? then u use the cloth move up to get different lenght right?Originally posted by vice_edge:range was 20cm- 75 cm for me . needle one i screw for method 1 focal length
dam i screwed it up...
i drop the marble at different spot...
at 70 cm.60 cm 50 cm...
dam......
and also my curve i draw str line...
dam......
and also wad is the size ofd the image formed?
magnified or same size? -
my range was 20,30,40,50,70,75 .. i got straight line . i put smaller image and focal length gone case i got 1cm... method 2 was 18.5+20 divide by 2
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i put 3,3,3,3,3,3,3 as my 'recorded times'Originally posted by Classyfied:is all drop form 80 cm right.??? then u use the cloth move up to get different lenght right?
dam i screwed it up...
i drop the marble at different spot...
at 70 cm.60 cm 50 cm...
dam......
and also my curve i draw str line...
dam......
and also wad is the size ofd the image formed?
magnified or same size?
and i name it recorded times/no., wtf. -
the marble is all drop from 80 cm right?Originally posted by Orange*Asterisk:i put 3,3,3,3,3,3,3 as my 'recorded times' and i name it recorded times/no., wtf. -
not suppose to dropOriginally posted by Classyfied:the marble is all drop from 80 cm right? start rolling down the marble from 40-80 -
but my freind say is all roll from the same point of 80 cm...then use the cloth cover parts of the ruler to get a different reading...?? dam i m screwed
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CLOTH? WTH DO THE CLOTH COME FROM? OMFG, HOW COME I DON'T HAVE IT.Originally posted by Classyfied:but my freind say is all roll from the same point of 80 cm...then use the cloth cover parts of the ruler to get a different reading...?? dam i m screwed -
the question got say about 40 cm for range annot ? anyway my school give me curve ruler no cloth to catch the goli marble
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huh? my readings from 40-90 leh. i dont get the cloth part.Originally posted by Orange*Asterisk:not suppose to drop start rolling down the marble from 40-80 -
the cloth(or anything similar) is for stopping the marble at the end of the ramp. nothing else...
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the marble is suppose to roll at a constant 80 cm.......Originally posted by TwinTurbo_Supra:huh? my readings from 40-90 leh. i dont get the cloth part.
thats wad my classmate told me..
i dun think he is worng.cuz hes the top student in the school =(
also quite true la...all roll from 80 cm...then ask u calculate the average acceleration...
dam...then i got one reading of 90cm..the examiner sure know one i never roll at a constand 80 cm de....
i this time screw liao...unless my paper 1 and 2 can do well. i m gonna kiss my A1 good bye...
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how do u plot a graph when u have only have record the times for 80cm only...Originally posted by Classyfied:the marble is suppose to roll at a constant 80 cm.......
thats wad my classmate told me..
i dun think he is worng.cuz hes the top student in the school =(
also quite true la...all roll from 80 cm...then ask u calculate the average acceleration...
dam...then i got one reading of 90cm..the examiner sure know one i never roll at a constand 80 cm de....
i this time screw liao...unless my paper 1 and 2 can do well. i m gonna kiss my A1 good bye... -
roll from 80 cm...Originally posted by Orange*Asterisk:how do u plot a graph when u have only have record the times for 80cm only...
then use the cloth given cover the 10 cm mark...
then 20 cm mark...
then u will get different readings -
errr isn't it the same? the marble will still roll same distance for both methods what.Originally posted by Classyfied:roll from 80 cm...
then use the cloth given cover the 10 cm mark...
then 20 cm mark...
then u will get different readings -
1st one from 80 com u roll down the ramp and take reading 3 times to find avg. then for graph thingy then u from 40 cm bla bla roll down and take timing each . each distance u roll down must have at least 3 readings tats how i got straight line best fit la
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actually got one friend say that its ok whether its a curve or straight line because of our reaction time. the length the marble rolled down takes a short time so our reaction time is a rather large percentage, resulting in some a curve and some a straight line. i think thats why for the gradient part, they ask for average gradient, so that you calculate the gradient at two points and get the average if you get a curve