Mathematical and Physical Journal
for High Schools
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Problem P. 4276. (October 2010)

P. 4276. At what angle can a ladder of weight G be leaned against the vertical smooth wall, if a man of mass m can safely climb up on it? The coefficient of static friction between the ground and the ladder is \mu0.

(4 pont)

Deadline expired on November 10, 2010.

Sorry, the solution is available only in Hungarian. Google translation

Megoldás. A létra és a fal \(\displaystyle \alpha\) szögére teljesülnie kell a

\(\displaystyle \tg\alpha\le 2\mu_{0}\frac{mg+G}{2mg+G}\)



156 students sent a solution.
4 points:96 students.
3 points:21 students.
2 points:14 students.
1 point:11 students.
0 point:10 students.
Unfair, not evaluated:4 solutionss.

Problems in Physics of KöMaL, October 2010