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Dynamic climbing ropes are designed to be quite pliant, allowing a falling climber to slow down over a long distance. The graph in (Figure 1) shows force-versus-strain data for an 11-mm -diameter climbing rope.

What is the Young's modulus for this rope?

Dynamic climbing ropes are designed to be quite pliant, allowing a falling climber-example-1
User YoYoMyo
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1 Answer

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The Young's modulus is calculated for the 11 mm diameter climbing rope to be 157.84 MPa .

How do we explain?

The force was measured in Newtons (N) and the area was calculated using the formula for the area of a circle:

π * (diameter/2)².

The diameter of the rope =11 mm,

the area was 0.0009503 m².

Young's modulus is defined as the stress divided by the strain. In this experiment, the stress was calculated in MPa and the strain was calculated in units of meters per meter.

The data from the experiment:

Quantity Value

Stress 150 MPa

Strain 0.01 m/m

Young's modulus 15000 MPa

In conclusion,, the Young's modulus for the 11 mm diameter climbing rope is 15000 MPa

User Mschwarz
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