A wire of length and radius r is fixed at one end. When a stretching force is applied at free end, the elongation in the wire is . When another wire of same material but of length and radius is also fixed at one end is stretched by a force applied at free end, the elongation in the second wire will be?
The explanation for the correct answer:
Step 1: Given data
Step 2: Concept used
is the applied force()
is the initial length()
is the area()
is young's modulus()
Step 3: Calculation
The Young's modulus of a material is calculated as follows:
Young's modulus is unchanged in the second scenario.
From the above formula
Therefore, a correct answer is an option().