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P. 4077. A 60-g and an 80-g ball are fixed to the ends of a 28-cm rod of negligible mass. The rod is balanced by a pivot such that it is horizontal and stays at rest. With what angular acceleration does it start to move, if the pivot is placed 2 cm closer to the heavier ball?

(4 points)

Deadline expired on 11 June 2008.

Statistics on problem P. 4077.
 92 students sent a solution. 4 points: 58 students. 3 points: 20 students. 2 points: 9 students. 1 point: 5 students.

• Problems in Physics of KöMaL, May 2008

•  Támogatóink: Morgan Stanley