The Student Room Group

Beam and cable experiment

Please state THREE possible sources of error in your results (experimental and theoretical), and where possible quantify them.

Reply 1

Original post
by Zahrax321
Please state THREE possible sources of error in your results (experimental and theoretical), and where possible quantify them.

1.

Support Point Friction (Experimental Study)

2.

Cable Stretch/Elasticity (Theoretical Basis)

3.

Measurement Inaccuracy in Angles and Distances (Experimental Data) T
The quantification of these phenomena is somewhat challenging.

Ciao,
Sandro
(edited 1 month ago)

Reply 2

Original post
by Nitrotoluene

1.

Support Point Friction (Experimental Study)

2.

Cable Stretch/Elasticity (Theoretical Basis)

3.

Measurement Inaccuracy in Angles and Distances (Experimental Data) T
The quantification of these phenomena is somewhat challenging.

Ciao,
Sandro

and to quantify them?

Reply 3

Original post
by Zahrax321
and to quantify them?
I would be happy to provide the solutions, but TSR rules prevent us from resolving the problem fully.

Ciao,
Sandro

Reply 4

Original post
by Nitrotoluene
I would be happy to provide the solutions, but TSR rules prevent us from resolving the problem fully.

Ciao,
Sandro


You can show without providing detailed solution.

Can always lead them to construct their own solution like "when you do this, you would get this" to let them fill in the steps.

If they do not show the work and expect you to show them, then you can forgo the conversation.

I believe OP is an university student, so he/she should know the consequences of plagiarism or copying other solutions.

Reply 5

Original post
by Zahrax321
and to quantify them?
Measuring uncertainty is important.

Okay, so when you're measuring beams and cables, things can go a little awry.

-You might be out by half a millimetre to a full millimetre just from not lining things up perfectly.
-Plus, errors of around ±0.1 N can occur when measuring the load, and the electronic load cell itself might be off by 0.5–2%.
-On top of all that, the models we use aren't always accurate, leading to errors of 5–15% because we simplify things for example, we assume that supports are rock solid and that pins move without friction.
-To keep these errors in check, it's crucial to document everything: your measurement method, the tools used, the positioning of the components and the room conditions.
-This helps to identify any anomalies and ensures that your final figures are accurate.
Ciao,
Sandro

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