Two sections in a bar of length 10cm and 20cm respectively are pulled axially. It causes an elongation of 0.2mm and 0.4mm respectively in each section. What will be the resultant strain in the bar?
A. 0.004
B. 0.002
C. 0.003
D. 0.006
Answer:A
Two sections in a bar of length 10cm and 20cm respectively are pulled axially. It causes an elongation of 0.2mm and 0.4mm respectively in each section. What will be the resultant strain in the bar?
A. 0.004 B. 0.002 C. 0.003 D. 0.006