Question 1 Report
Define (i) Elasticity; (ii) Young's modulus; (iii) Force constant.
(i) Elasticity
Elasticity is the ability of a material to regain its original shape and size after the deforming force applied to it has been removed.
(ii) Young's modulus
Young's modulus is the ratio of tensile stress to tensile strain for a material stretched within its elastic (proportional) limit:
Its unit is \(\text{Nm}^{-2}\) (pascal).
(iii) Force constant
The force constant (elastic/spring constant) is the force required to produce unit extension in a material obeying Hooke's law:
Its unit is \(\text{Nm}^{-1}\).
Answer Details
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