Question
What is an elastomer? What are their special features?
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Answer
Elastomers: Elastomer are those substances which can be stretched to cause large strains. Substances like tissue of aorta, rubber etc., are elastomers.
The stress-strain curve for an elastomer is as shown in figure below.
Although elastic region is very large but the material does not obey Hooke's law over most of the region. Moreover, there is no well defined plastic region.
The stress-strain curve for an elastomer is as shown in figure below.
Although elastic region is very large but the material does not obey Hooke's law over most of the region. Moreover, there is no well defined plastic region.
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(a) In an elastic collision of two bodies, the momentum and energy of each body is conserved.
(b) Total energy of a system is always conserved, no matter what internal and external forces on the body
are present.
(c) Work done in the motion of a body over a closed loop is zero for every force in nature.
(d) In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.