Static Forces and Newton’s Laws of Motion



A block resting on the surface as shown above has a force of 30 N applied. Which statement best describes the force between the block and the surface upon which it rests?

a)   The normal force is less than 40 N.

b)   The normal force is greater than 40 N.

c)   The normal force is equal to 40 N.

d)  The coefficient of friction increases as the angle increases.

e)   The coefficient of friction decreases as the angle increases.