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What do you understand by the perfectly elastic, plastic and rigid bodies? Discuss their limits. |
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Answer» Perfectly elastic bodies: Those bodies which regain their original configuration immediately and completely after the removal of deforming force are called perfectly elastic bodies. Perfectly plastic bodies: Bodies which do not regain their original configuration at all on the removal of deforming forces are called perfectly plastic bodies. Generally no body is perfectly elastic and perfectly plastic; but they are between these two extremes. Normally, quartz is perfectly elastic body and putty, wax are perfectly plastic bodies. Rigid bodies: Bodies which do not get deformed or have very small deformation on applying external force are called rigid bodies. |
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