Mathematical and Physical Journal
for High Schools
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Problem P. 3945. (January 2007)

P. 3945. Find the elongation of that spring which pulls a cart of mass M with a constant force, and the mathematical pendulum which is attached to the cart makes an angle of \alpha with the vertical. The mass of the bob on the pendulum is m and the spring constant is D. Friction and the mass of the spring are negligible.

(4 pont)

Deadline expired on February 12, 2007.


155 students sent a solution.
4 points:89 students.
3 points:45 students.
2 points:9 students.
1 point:3 students.
0 point:8 students.
Unfair, not evaluated:1 solution.

Problems in Physics of KöMaL, January 2007