A certain force increases the length of a wire by 1 mm. The force required to increases its length by 2 mm is …….
A. 2F
B. 4F
C. 8F
D. 16F
Answer:A
A certain force increases the length of a wire by 1 mm. The force required to increases its length by 2 mm is …….
A. 2F B. 4F C. 8F D. 16F