KöMaL - Középiskolai Matematikai és Fizikai Lapok
Sign In
Sign Up
 Magyar
Information
Contest
Journal
Articles

 

Problem P. 4557. (September 2013)

P. 4557. A 0.6-kg iron cylinder is attached to the end of the spring shown in the figure, and a disc shape magnet of mass 0.2 kg sticks to the bottom of the iron cylinder. Initially the spring, the spring constant of which is 64 N/m, is unstretched, and then the system is released. During the oscillation the magnet does not fall off.

a) What is the period of the oscillation?

b) What is the greatest speed of the magnet?

c) What is the minimum force between the magnet and the iron cylinder?

(4 pont)

Deadline expired on October 10, 2013.


Sorry, the solution is available only in Hungarian. Google translation

Megoldásvázlat. \(\displaystyle a)\) 0,7 s.

\(\displaystyle b)\) 1,1 m/s.

\(\displaystyle c)\) 3,9 N.


Statistics:

113 students sent a solution.
4 points:52 students.
3 points:42 students.
2 points:7 students.
1 point:11 students.
0 point:1 student.

Our web pages are supported by:   Ericsson   Cognex   Emberi Erőforrás Támogatáskezelő   Emberi Erőforrások Minisztériuma   Nemzeti Tehetség Program    
MTA Energiatudományi Kutatóközpont   MTA Wigner Fizikai Kutatóközpont     Nemzeti
Kulturális Alap   ELTE   Morgan Stanley