Two blocks rest on a horizontal frictionless surface as shown. The surface between the top and bottom blocks is roughened so that there is no slipping between the two blocks. A 30-N force is applied to the bottom block as suggested in the figure.
-What is the force of static friction between the top and bottom blocks?

Question

Two blocks rest on a horizontal frictionless surface as shown. The surface between the top and bottom blocks is roughened so that there is no slipping between the two blocks. A 30-N force is applied to the bottom block as suggested in the figure. 
-What is the force of static friction between the top and bottom blocks?

Quizplus · Accepted Answer

The Answer of Two blocks rest on a horizontal frictionless surface as shown. The surface between the top and bottom blocks is roughened so that there is no slipping between the two blocks. A 30-N force is applied to the bottom block as suggested in the figure. 
-What is the force of static friction between the top and bottom blocks?

Two Blocks Rest on a Horizontal Frictionless Surface as Shown