Experiment: To compare the shear and tensile strength of sponge rubber and soft wood

////Experiment: To compare the shear and tensile strength of sponge rubber and soft wood

Experiment: To compare the shear and tensile strength of sponge rubber and soft wood

Sheets of made of sponge rubber. Image credit rollsheetrubber.com

Sheets of made of sponge rubber. Image credit rollsheetrubber.com

ZIMSEC O Level Combined Science Notes: Experiment: To compare the shear and tensile strength of sponge rubber and soft wood

Aim: To compare the shear and tensile strength of sponge rubber and a softwood

Materials: wooden ice-cream sticks/match sticks, pieces of sponge rubber, force meter

Method

  1. Twist the piece of ice cream sticks(poplar wood)
  2. Twist the pieces of foam/sponge rubber
  3.  Attach the rubber on one end to the wall using bulldog clips and pull it using a force meter until it breaks
  4. Attach to the wall and pull the other end of  the wood with the same force

Observation and results

  • The wood snaps when it is twisted (subjected to shear force)
  • The sponge rubber remains intact when it is twisted (subjected to shear force)
  • The sponge rubber breaks in the middle when enough tensile/pulling force is applied
  • Wood does not break when the same tensile force is applied
  • It is very difficult to break wood by pulling and it

Conclusion

  • Wood is strong in tension and weak in shear
  • Sponge rubber is strong in shear and weak in tension

To access more topics go to the Combined Science Notes page

By |2017-01-17T11:12:13+00:00June 17th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|Comments Off on Experiment: To compare the shear and tensile strength of sponge rubber and soft wood

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He holds an Honours in Accountancy degree from the University of Zimbabwe. He is passionate about technology and its practical application in today's world.
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