English Információ A lap Pontverseny Cikkek Hírek Fórum

Rendelje meg a KöMaL-t!

VersenyVizsga portál

Kísérletek.hu

Matematika oktatási portál

P. 4520. The bodies arranged as shown in the figure are at rest; m1=1 kg, =30o. The rope attached to the body of mass m1 is horizontal.

a) Determine the magnitude of m2.

b) Suppose that the rope which fixes the body of mass m1 brakes. What is the acceleration of the bodies when they begin to move?

(4 points)

Deadline expired on 10 April 2013.

Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldásvázlat. $\displaystyle a)$ $\displaystyle m_2=2m_1=2$ kg.

$\displaystyle b)$ $\displaystyle a_1=\sqrt{3}g\approx17~\rm m/s^2$; $\displaystyle a_2=0.$

Statistics on problem P. 4520.
 130 students sent a solution. 4 points: 81 students. 3 points: 23 students. 2 points: 22 students. 1 point: 2 students. 0 point: 2 students.

• Problems in Physics of KöMaL, March 2013

•  Támogatóink: Morgan Stanley