Recent content by tomas_xc

  1. T

    Tension and Friction Problem, I'm finding weird answer.

    But by doing so wouldn't we be raising the friction on block B, since in the new system just the tension (which needs to be the same on the two equivalent systems) acts on the block B? After finding the tension on the new equivalent system, if we move back to the old one and keep the tension...
  2. T

    Tension and Friction Problem, I'm finding weird answer.

    But I should consider the maximum static friction force for the blocks? Well, assuming it for the first leads: f_s(max)(A) = \mu_s F_n(A) = 0.30 \times 59.98 = 17.99 \, N By Newton's Second Law F_1 - T - f_s(max)(A) = 0 (Since we assume there's no motion) 50.39 - T - 17.99 = 0 T =...
  3. T

    Tension and Friction Problem, I'm finding weird answer.

    Yes, the forces are in opposite directions. Hum, but the correct thing to do is consider the blocks as a unique block and to add all the friction forces? And then decide if the net force is greater than friction?
  4. T

    Tension and Friction Problem, I'm finding weird answer.

    Homework Statement Two blocks A and B are connected by an ideal rope R, both blocks lie on a horizontal surface S. The coefficient of static friction (\mu_s = 0.30) and kinetic friction (\mu_k = 0.20) between the blocks and the surface S are the same for both blocks. The mass of block A is m_A...
  5. T

    High School How to read correctly this statement (associative law)

    Thank you! You really helped me.
  6. T

    High School How to read correctly this statement (associative law)

    I'm not a native speaker of English and I was reading a Calculus's book and I didn't know the correct way to read a statement about real numbers. This is the statement: "a + (b + c) = (a + b) + c" Is it "a plus the sum of b and c is equal to the sum of a and b plus c"? Or is it just "a...