Question
Question: A wire of diameter 1mm breaks under a tension of 1000 N. Another wire, of same material as that of t...
A wire of diameter 1mm breaks under a tension of 1000 N. Another wire, of same material as that of the first one, but of diameter 2 mm breaks under a tension of
A
500 N
B
1000 N
C
10000 N
D
4000 N
Answer
4000 N
Explanation
Solution
Breaking force ∝ r2
If diameter becomes double then breaking force will become four times i.e. 1000 × 4 = 4000 N