Задача №4.56

Условие

Между двумя гладкими наклонными плоскостями OA и OB положены два гладких соприкасающихся однородных цилиндра: цилиндр с центром C1 веса P1=10 Н и цилиндр с центром C2 веса P2=30 Н. Определить угол φ, составляемый прямой C1C2 с горизонтальной осью xOx1, давления N1 и N2 цилиндров на плоскости, а также силу N взаимного давления цилиндров, если угол AOx1=60°, а угол BOx=30°.

Решение




Предыдущая задача №55
Однородный брусок AB, который может вращаться вокруг горизонтальной оси A, опирается на поверхность гладкого цилиндра радиуса r, лежащего на гладкой горизонтальной плоскости и удерживаемого нерастяжимой нитью AC. Вес бруска 16 Н; длина AB=Зr, AC=2r. Определить натяжение нити T и силу давления бруска на шарнир A.
Следующая задача №57
Два гладких однородных шара C1 и C2, радиусы которых R1 и R2, а веса P1 и P2, подвешены на веревках AB и AD в точке A; AB=l1; AD=l2; l1+R1=l2+R2; угол BAD=α. Определить угол θ, образуемый веревкой AD с горизонтальной плоскостью AE, натяжения веревок T1, T2 и силу давления одного шара на другой.
Источник: Решебник Мещерского 12 класс
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55.44
56.3
56.7
56.9
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