Questoes 4 5 e 4 6 Mecanica

4.5 Fa = T P - T = mB a mA = 5 Kg mB = 2.5 Kg mC = ? \(c = \) 2 T = A (mA + mC) a P - T = mB a P = a (mA + mB + mC) mB g = a (mA + mB + mC 25 = a (7.5 + mC) 25 = a \(C + 7.5 + 1\mC) 2mC = 25 - 15 mC = \(\\frac{10}{2}\) = 5 Kg \(c = 0.2 \) \(mA \) e\, 8 a = 2 \(m/s^2\) 4.6 ao = 0.5 mA = 2 Kg a) \bar{F_B} FAF = NDA = P\A F\B = \) e Norma F = (mA+mC) a b) P\A = F\A P\A = 4\N\\A \(mB\ g = 4 \) \(mA\ a\) a = \(\\frac{10}{0.5}\) a = 20 \(m/s^2\) c) \(\it{Y{ao}+una+\ Y{au} = ...}\)