Балкански 2008, Теория — Задача 4. Exercise 3

Concours Général de Physiques « Minko Balkanski » — 17 May 2008 · 17 май 2008 г.

Указания

The main problem and the three exercises are completely independent and can be solved in any order.

All the answers must be given in English or French. The clarity and precision will be taken into account for the final note.

The exam is 4 hours long! The calculators are authorized.

Условие

Ball A hanging on a thread from a horizontal support, and ball B resting on a horizontal plane.

Consider two identical homogeneous balls, A and B, with the same initial temperatures. One of them is at rest on a horizontal plane, while the second one hangs on a thread. The same quantities of heat QQ have been supplied to both balls. Are the final temperatures of the balls the same or not? Justify your answer. (All kinds of heat losses are negligible.)

Решение

Внимание: Непълно решение

В архива няма официално решение на тази задача.

Оригинал в Архива: CGP_2008_en.pdf