Answer to Question #74797 in Mechanics | Relativity for Callista

Question

B) A 3.0 kg block sits atop a 10.0 kg block and, initially, both are at rest. There is friction at the interface between the two blocks and the coefficients of static and kinetic friction are 0.60 and 0.50 respectively (but no friction anywhere else). The top block is anchored to the left wall by a horizontal, massless & inflexible rope. There is a tension force, TR, (to the right) applied by another horizontal rope attached to the bottom block. Gravity, with g = 10 m/s2, acts in the vertical direction.

1) If the tension in the right rope is 10 N, what is the tension in the left rope?
2) With respect to part A, what is the friction force by the top block on the
bottom block?
3) What tension in the right rope would the bottom block move?
4) Now the tension in the right rope is increased to 20 N. What is the tension
in the left rope?
5) With respect to part C, what is the friction force by the top block on the
bottom block?
6) What is the resulting acceleration of the bottom block?