Problem P. 4055. (March 2008)
P. 4055. One end of a long, thin elastic sheet of negligible mass is attached to the rim of a horizontal table, and a 3-kg object is fixed to its other end. At the equilibrium position the end of the sheet descends by 6 cm below the horizontal. Then the object is raised by 4 cm above the horizontal.
How much work is done while the object is raised?
Deadline expired on 11 April 2008.
|120 students sent a solution.|
|4 points:||79 students.|
|3 points:||1 student.|
|2 points:||7 students.|
|1 point:||13 students.|
|0 point:||18 students.|
|Unfair, not evaluated:||2 solutions.|