Question

refer to the figure below.draw the forces acting on the block of wood.use the dot as the origin of the forces

Answer 1

There are only two forces acting on the block of wood.  

Explanation:

• There are only two forces acting on the block of wood.  
• The weight of the block acting downward and another force equal in magnitude but opposite in direction is acting on the block to keep it intact.
• According to Newton's third law of motion for every action taking place in nature, there is another force (Opposite reaction) equal in magnitude.
• If the block is exerting force on the table then the table is also exerting opposite force on it.