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 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.
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.