Young Modulus experiment Watch

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Malik
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#1
Report Thread starter 13 years ago
#1
Can some please provide a suitable answer for the questions that usally comes up in OCR paper "describe an experiment to calculate young modulus". The one in the phyics book i have is a bit long winded, what I need is just a clean detailed experiment. If anyone has the markscheme to an OCR pastpaper answering the question that would be even better.

I am not sure how much detail we have to really go into, do we have to mention every instrument , their accuracy. Calculate averages of lengths , how to plot the graph. How to calculate the gradient?

Thanks 2 anyone in advance
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Talya
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Wire.

Measure diameter with micrometer. Calculate area of wire.

Measure length with ruler.

Hang over pulley at end of table.

Put wire on ruler.

Stick farthest end on with tape.

Hang weights off end of wire (dangling over the table edge)

Add weights, record weight in table.

Record the extension for each weight.

Ta da.

-Kavanne
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Christophicus
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Also
- calculate values for stress and strain.
- Draw a graph of stress vs strain.
- Gradient = Young modulus of string/wire.
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