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.|