Question

In tension test, a rod of diameter 20 mm has
final length 120 mm and if initial gauge length
is 100 mm find % elongation of rod.​

Answer 1

Answer:20%

Step-by-step explanation:

• Given final length of the rod=120mm
• Initial length=100mm
• Change in length=(120-100)mm

                                      =20mm

• %Elongation=$\frac{20}{100}*100$

                            =20%

• Hence,elongation is 20%.

Answer 2

Answer:20%

to find : %Elongation of road

Step-by-step explanation:

• Given final length of the rod=120mm
• Initial length=100mm
• Change in length=(120-100)mm

=20mm

• $Elongation=\frac{20}{100}*100 = 20\%$

Hence,elongation is 20%.

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