Problem P. 4752. (September 2015)
P. 4752. The string of a bow is pulled by a force of 200 N, such that the arrow is moved backwards by a distance of 50 cm. The applied force is proportional to the displacement of the midpoint of the string. With this bow an arrow of mass 40 g is shot vertically upwards. To what maximum height can the arrow fly if 40% of the elastic energy is used?
(4 pont)
Deadline expired on 12 October 2015.
Statistics:
188 students sent a solution.  
4 points:  155 students. 
3 points:  18 students. 
2 points:  10 students. 
1 point:  3 students. 
0 point:  1 student. 
Unfair, not evaluated:  1 solution. 
