Três chapas retangulares rígidas repousam em um plano horiz...
Próximas questões
Com base no mesmo assunto
Ano: 2013
Banca:
UECE-CEV
Órgão:
UECE
Prova:
UECE-CEV - 2013 - UECE - Vestibular - Física e Química |
Q1279913
Física
Três chapas retangulares rígidas repousam em
um plano horizontal, e podem girar livremente em
torno de eixos verticais passando por P. As dimensões
das chapas são identificadas na figura a seguir, em
termos do comprimento L. Nos pontos A, B e C, são
aplicadas três forças horizontais iguais.
![Imagem associada para resolução da questão](data:image/png;base64,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)
A partir da segunda Lei de Newton, pode-se mostrar que a aceleração angular inicial de módulo ∝≠ 0 de cada chapa é proporcional ao momento da respectiva força em relação ao eixo de rotação de cada corpo. Desprezando todos os atritos, é correto afirmar-se que
A partir da segunda Lei de Newton, pode-se mostrar que a aceleração angular inicial de módulo ∝≠ 0 de cada chapa é proporcional ao momento da respectiva força em relação ao eixo de rotação de cada corpo. Desprezando todos os atritos, é correto afirmar-se que