Pulley Problems | AP Physics 1

What is the effect of a frictionless pulley on tension?

• The tension varies along the rope due to friction.

• The tension is the same throughout the rope, as there are no opposing forces.

• The tension is greater on one side of the pulley.

• The tension is zero when the pulley is in motion.

What is the acceleration due to gravity?

• 9.81 @@ ext{ m/s}^2@@

• 10.5 @@ ext{ m/s}^2@@

• 8.9 @@ ext{ m/s}^2@@

• 9.0 @@ ext{ m/s}^2@@

What is a free-body diagram?

• A graphical representation used to visualize the forces acting on an object.

• A diagram that shows the motion of an object over time.

• A chart that lists all the possible outcomes of an experiment.

• A visual tool for calculating the area under a curve.

How do you calculate the force of friction?

• @@F_f = ext{friction coefficient} imes N@@, where @@N@@ is the normal force.

• @@F_f = ext{friction coefficient} + N@@, where @@N@@ is the normal force.

• @@F_f = ext{friction coefficient} - N@@, where @@N@@ is the normal force.

• @@F_f = ext{friction coefficient} imes N^2@@, where @@N@@ is the normal force.

How do you determine the direction of tension in a pulley system?

• Tension always pushes towards the object and away from the pulley.

• Tension always pulls away from the object and towards the pulley, acting along the length of the rope.

• Tension can act in any direction depending on the weight of the object.

• Tension is always directed downwards regardless of the pulley system.

What is the significance of rounding answers in physics problems?

• It simplifies calculations for easier understanding.

• It ensures precision and accuracy in reporting measurements.

• It allows for more complex equations to be solved.

• It is a requirement for all physics problems.

What is the role of friction in pulley problems?

• Friction increases the speed of the masses.

• Friction has no effect on the motion of the masses.

• Friction opposes the motion of the masses and must be accounted for when calculating tension and acceleration.

• Friction only affects the pulley and not the masses.

What is the normal force in a pulley system?

• The force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

• The force that pulls objects towards the center of the Earth.

• The force that opposes the motion of an object in a pulley system.

• The force exerted by a pulley to lift an object.

How does mass affect tension in a pulley system?

• The greater the mass of an object, the greater the gravitational force acting on it, which increases the tension in the rope.

• Mass has no effect on tension in a pulley system.

• Increasing mass decreases the tension in the rope due to counteracting forces.

• Tension is only affected by the angle of the pulley, not the mass of the object.

How do you set up equations for a pulley problem?

• Identify all forces acting on each mass, apply Newton's second law, and set up equations based on the net force.

• Only consider the weight of the masses involved in the pulley system.

• Ignore friction and air resistance when calculating forces.

• Use the formula for kinetic energy to determine the motion of the masses.