Magyar Information Contest Journal Articles

# Problem P. 4165. (May 2009)

P. 4165. Find the mass of that steel wire, which stores elastic potential energy of 10 J when it is expanded. The tensile strength of steal is 900 MPa. Its Young modulus is 210 GPa.

(4 pont)

Deadline expired on 11 June 2009.

### Statistics:

 91 students sent a solution. 4 points: 74 students. 3 points: 3 students. 2 points: 6 students. 1 point: 5 students. Unfair, not evaluated: 3 solutions.

 Our web pages are supported by: Morgan Stanley