Physics Design Lab

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Physics Lab

Research Question : How does the number of strands of spaghetti affect the strength of the spaghetti strands?

Candidate Name:

Candidate Number :

Session : 2013

(http://2.bp.blogspot.com/_nu8MnrzG0PA/TRm8LYg2-RI/AAAAAAAADYw/Q-JCvJHwDxk/s1600/Spaghetti+021.JPG)

VARIABLES :
Table No.1 - This table shows the independent , dependent and control variables for the experiment. Serial No.| Type of variable| Name of variable|
1| Independent| Number of spaghetti strands , n|
2| Dependent| Mass required to break spaghetti strands , M/g| 3| Control| A. Type of spaghetti stands used. B. Weight of thermocol cup used. C. Distance from the table from which thermocol cup is placed , d/cm.|

METHOD TO CONTROL VARIABLES:
1. Use raw uncooked spaghetti for this experiment.
2. Weigh the thermocol cup using a digital balance.
3. Measure a distance of 12 cm from the edge of the table of the spaghetti strand and suspend the thermocol cup on the strand using a string. INSTRUMENTS:
Table No.2 - This table shows the independent , dependent and control variables for the experiment. Serial No.| Instruments| Least count|
1| Metre rule| 0.1 cm|
2| Digital balance| 0.001 g|

MATERIALS:
* Thermocol cup
* String
* Raw spaghetti
* Masking tape
* Metre rule
* Pencil
* Standard weights

PROCEDURE:
1. First attach the string to the paper cup. Make two holes on either side of the cup just below the rim and pass the string through it. 2. Tape one end of 5 spaghetti strands to the table and suspend the paper cup on the spaghetti strand 12 cm away from the edge of the table. 3. Keep adding standard weights until the spaghetti strands break. 4. Weigh the paper cup with the standard weights.

5. Subtract this weight from the weight of the cup and record this in the table below. 6. Repeat the above steps for 5 trials.
7. Repeat the above steps for 10 , 15 , 20 and 25...
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