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P. 4215. A body is attached to a vertically hung soft spring. The body is released and the time during which the body reaches the lowest point of its path is measured. How many times does this time more than the time while an object, which falls freely without any initial speed, covers the same distance?

(4 points)

Deadline expired on 10 February 2010.

Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldás. $\displaystyle t_1/t_2=\pi/2\approx1,571$.

Statistics on problem P. 4215.
 143 students sent a solution. 4 points: 92 students. 3 points: 17 students. 2 points: 25 students. 1 point: 5 students. 0 point: 2 students. Unfair, not evaluated: 2 solutions.

• Problems in Physics of KöMaL, January 2010

•  Támogatóink: Morgan Stanley