Lab Measuring Gravity

Ruhana Hashem
IB 1
Physics
07/12/2011

Measuring Gravity (g)
Introduction:
investigating, whether the gravity trunk the same even if the time taken, for a study vent by a painting gate varies with different lengths of the reputation. We sop up that in this experiment, time needed for a piece of a paper to pass through the laser beam is proportional to the distance of that same piece of paper. This means that if length of the paper is less than the previous data the time taken would similarly be less, or if the length of the paper would be much than previous the time takes would theoretically also be more(prenominal) than the previous data. The initial velocity of dropping paper should be 0 otherwise the time taken showed on pictorial matter gate will be shorter than it should be and affect the verity of the experiment.
First of all, we rearranged the formula s=ut+12gt2 so that it becomes g=2st2 to see if this equation works every time to line up the gravity. For our experiment, our research question is:
Variables:
Independent unsettled(x)= Distance(cm)
Dependent variable(y)= Time (s)
Controlled variable: Paper-type, word-painting gate, the pressure of the room
Materials:
A photo gate
artificial paper
a pair of scissor
ruler (the smallest precision is mm)
tripod
A pen

method:
1.



First of all, I cut the same material of paper into 6 pieces with different lengths from 40.00cm to 65.00cm.
2. Secondly, I made so that the tripod held the photo gate to stand on a balanced surface
3. then(prenominal) I dropped each piece of paper pass through the photo gate (straight downward).
4. I reset the time readings of the photo gate every time before releasing a different paper with a different length.
5. The experiment was restate 5 times for each 6 different lengths of paper.

Results:
Table.1 The uncertainty in Distance is estimated to be ±0.05cm due to the difficulty of measuring stick the length of paper. Uncertainty in Time is calculated do the formula (Max time-Min...If you want to get a full essay, high society it on our website: Orderessay



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