Physics Quiz: Forces, Friction, and Motion

What is the condition for translational equilibrium?

• Fnet = 0
• Fnet > 0
• Fnet < 0
• Fnet = ma

Which of the following statements about static friction is true?

• It always equals the applied force.
• It can never exceed the maximum static friction.
• It acts in the same direction as motion.
• It is always less than dynamic friction.

What does Hooke's law describe?

• The relationship between force and acceleration.
• The relationship between spring force and extension.
• The relationship between mass and velocity.
• The relationship between friction and surface area.

If a spring is compressed, what direction does the restoring force act?

• To the left
• To the right
• Upwards
• Downwards

What is the coefficient of kinetic friction (μk)?

• A measure of static friction
• A measure of friction when surfaces are in motion
• Always greater than static friction
• Independent of surface type