Problem P. 4077. (May 2008)
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?
Deadline expired on June 11, 2008.
92 students sent a solution. 4 points: 58 students. 3 points: 20 students. 2 points: 9 students. 1 point: 5 students.