Елена Царёва Чеему равна сила тяжести, действующая на потолок с силой 50 Ньютон, какова масса люстры? А. 50кг; Б. 4кг; В. 5кг.
АК Алексей Куликов http://www.fxyz.ru/%D1%84%D0%BE%D1%80%D0%BC%D1%83%D0%BB%D1%8B_%D0%BF%D0%BE_%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B5/%D0%BC%D0%B5%D1%85%D0%B0%D0%BD%D0%B8%D0%BA%D0%B0/%D0%B4%D0%B8%D0%BD%D0%B0%D0%BC%D0%B8%D0%BA%D0%B0/%D0%B3%D1%80%D0%B0%D0%B2%D0%B8%D1%82%D0%B0%D1%86%D0%B8%D1%8F_%D1%82%D1%8F%D0%B3%D0%BE%D1%82%D0%B5%D0%BD%D0%B8%D0%B5/%D0%B7%D0%B0%D0%BA%D0%BE%D0%BD_%D0%B2%D1%81%D0%B5%D0%BC%D0%B8%D1%80%D0%BD%D0%BE%D0%B3%D0%BE_%D1%82%D1%8F%D0%B3%D0%BE%D1%82%D0%B5%D0%BD%D0%B8%D1%8F/%D1%81%D0%B8%D0%BB%D0%B0_%D1%82%D1%8F%D0%B6%D0%B5%D1%81%D1%82%D0%B8/
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