MCAT Physics Problem: Elastic Properties of Solids

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SUMMARY

The discussion focuses on solving an MCAT physics problem related to the elastic properties of solids, specifically involving Young's modulus. The problem presents a scenario with a 2.5 kg mass attached to an artery sample with a radius of 0.05 cm and a length of 15 mm, requiring the calculation of elongation. Participants clarify that Y represents Young's modulus, valued at 1x10^8 Nm², and seek guidance on the appropriate equations to apply in this context.

PREREQUISITES
  • Understanding of Young's modulus in material science
  • Basic knowledge of tensile stress and strain
  • Familiarity with the formula for elongation in solids
  • Concept of force and mass in physics
NEXT STEPS
  • Review the formula for elongation: ΔL = (F * L) / (A * Y)
  • Study the relationship between stress, strain, and Young's modulus
  • Explore examples of elastic properties in different materials
  • Practice solving similar MCAT physics problems involving elasticity
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MCAT candidates, physics students, and educators focusing on the elastic properties of materials and their applications in real-world scenarios.

justa18unlv
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To all,

So i"m studying physics for MCAT and I'm on solids sections, specifically on elastic properties of solids, I kind of get it but there is a problem I do not understand. The problem is:
A 2.5-kilogram (kg) mass is attached to one end of a sample of artery with 0.05 centimeter (cm) radius and 15 millimeter (mm) length. The other end of the artery sample is secured to a rigid support. Determine the elongation of the artery sample Y= 1x10^8 Nm^2.
Mostly I'm having a problem with determining which equation to use for this example, could someone help me out and maybe give me guidelines to what I should look for so I know which equations or theorems to use.
Thank you,
Justina
 
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Welcome to PF!

Hi Justina! Welcome to PF! :wink:
justa18unlv said:
… Determine the elongation of the artery sample Y= 1x10^8 Nm^2.
Mostly I'm having a problem with determining which equation to use for this example …

I assume Y is Young's modulus?

Then what equation do you know involving Young's modulus? :smile:
 

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