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.
(4 pont)
Deadline expired on February 12, 2007.
Statistics:
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. 
