IGCSE/GCSE/O & A Level/IB/University Student Forum
Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: falafail on November 02, 2009, 05:29:46 pm
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uh, i posted this in the physics practical thread but i'm worried no one's gonna notice it before tomorrow sooo i'm just gonna post it as a topic (is that allowed? yes? no? whatever?)
right, quick question.
in one of the past papers, a ruler was suspended from strings, and one of the questions was to explain how you ensured that the ruler was horizontal.
i checked the examiner report, this is what it said:
"Most candidates stated that they would measure the distance of the rule from the bench top at
each end of the rule, and that the values would be the same if the rule was horizontal. This was
accepted for one mark. The more able candidates went on to give further detail, usually involving
the set square, to gain a second mark."
could someone explain what that last part means? the set square? ???
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A set square is 2 rulers at right angles.
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http://kr.cs.ait.ac.th/~radok/math/mat2/chap2.htm
with the use of a set squares u cn measure if the rule is 90 degrees to the set square
i hpe this cld help
n nyw if u want to ensure a ruler is horizontal
u may use a spirit level(its an accpted ans)
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Fixed at right angles
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ohhhh. i didn't know that was called a set square! XD
thanks.
n nyw if u want to ensure a ruler is horizontal
u may use a spirit level(its an accpted ans)
what's a spirit level?
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ohhhh. i didn't know that was called a set square! XD
thanks.
what's a spirit level?
This is the edexcel paper right? What year is it? I didn't know as they gave us loose sheets
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This is the edexcel paper right? What year is it? I didn't know as they gave us loose sheets
loose sheets..?
if you mean the examiner report i got that from, then no, it's CIE. :-\
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loose sheets..?
if you mean the examiner report i got that from, then no, it's CIE. :-\
Yeah. I got that. :/
Spring holding a ruler horizontally in air acting as a pivot.. :S
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Yeah. I got that. :/
Spring holding a ruler horizontally in air acting as a pivot.. :S
... what? :P
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... what? :P
Ef it. I'd post a picture of the experiment if I was on my pc.
Stupid phone :(
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Ef it. I'd post a picture of the experiment if I was on my pc.
Stupid phone :(
hah, get on from your PC?
but for the experiment i got that from, the ruler was held up by a string on one side and a string connected to a spring on the other side. the spring wasn't the pivot, i don't think..
i just skimmed through it though, so i don't quite know what we were supposed to do :P
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hah, get on from your PC?
but for the experiment i got that from, the ruler was held up by a string on one side and a string connected to a spring on the other side. the spring wasn't the pivot, i don't think..
i just skimmed through it though, so i don't quite know what we were supposed to do :P
Yeah that's the experiment I think. What year is it? We need to hang a mass or something
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Yeah that's the experiment I think. What year is it? We need to hang a mass or something
november 05.
it's a newton-meter though, not a spring* .. my bad.