1. A block of wood, which has a mass of m 5.00 kg., is at rest on a horizontal surface. A spring scale is attached to a hook on the end of the block. The spring scale is slowly pulled until the block just begins to move. At this point, the reading on the scale is 29.0 N. After the block starts sliding, the reading on the scale drops back to 23.0 N. 

a. What is the magnitude of the normal force acting on this block? 

b. What is the magnitude of the frictional force on this block as it slides along the surface at a constant speed? 

c. What is the coefficient of static friction u, between the block of wood and the horizontal surface? 

d. What is the coefficient of kinetic friction u between the block of wood and the horizontal surface? 

Answer rating: 100% (QA)

To solve this problem we will use Newtons laws of motion and the relationship between forces and mot... View the full answer