Friction Worksheet Problem Solving with Newton's Laws of Motion

a. What is the weight of the box? What is the normal force of the ground on the box?

b. The box is pushed to the left with 20 N of force, but does not move. What is the Static Friction Force?

c. When the pushing force is increased to 40 N, the box just begins to move. What is the Maximum Static Friction Force?

d. What is the coefficient of Static Friction (us) between the ground and box?

Answer:

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