Skip to content

Course home

Sign up

Materials

EasyMediumHard
1234
Question 3

A bio-engineer is studying the mechanical properties of a synthetic spider silk dragline thread. A single filament of this silk has a Young modulus of YYY. To create a high-strength microfiber for micro-robotics, the engineer spins a new bundle consisting of three identical filaments of this silk twisted together. The resulting bundle has three times the cross-sectional area and 1.5 times the length of the original single filament.

What is the Young modulus of the new bundle in terms of YYY?

A

0.5Y0.5 Y0.5Y

B

YYY

C

2Y2 Y2Y

D

4.5Y4.5 Y4.5Y

Markscheme

Materials Questions

  1. A Level
  2. /Physics
  3. /Materials

20 exam-style questions on AQA A Level Physics Materials, covering Bulk properties of solids and The Young modulus. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank