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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 0.

(4 points)

Deadline expired on 10 November 2010.

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

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

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

feltételnek.

Statistics on problem P. 4276.
 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 solutions.

• Problems in Physics of KöMaL, October 2010

•  Támogatóink: Morgan Stanley