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P. 4672. A solid sphere of volume $\displaystyle 1~{\rm dm}^3$ made of Aluminium is connected with a thin thread to a wooden sphere made of pine tree, which has a density of $\displaystyle 0.5~\rm g/cm^3$. The spheres are fully immersed into water and they are at rest.

$\displaystyle a)$ What is the volume of the wooden sphere?

$\displaystyle b)$ What is the tension in the thin thread connecting the spheres?

(3 points)

Deadline expired on 10 December 2014.

Statistics on problem P. 4672.
 114 students sent a solution. 3 points: 78 students. 2 points: 25 students. 1 point: 3 students. 0 point: 7 students. Unfair, not evaluated: 1 solution.

• Problems in Physics of KöMaL, November 2014

•  Támogatóink: Morgan Stanley