AP Physics 1 MCQ Practice by Topic 2027
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There are 42 original multiple-choice questions for each of the 43 official AP Physics 1 topics, giving 1,806 topic MCQs with answers, explanations and lesson routing.
- 43 topic banks.
- 42 MCQs per topic.
- 1,806 topic MCQs total.
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All 43 official topics are available. Each MCQ bank contains 42 original questions and each FRQ bank contains four prompts aligned to the four current free-response task types.
Torque Practice
All questions are original. Check each answer for immediate feedback and explanation, then use the lesson link inside the explanation when a concept needs repair.
A 10 N force is applied perpendicular to a wrench 0.40 m from the pivot. What torque magnitude is produced?
Correct answer: A. τ=rF sin90°=(0.40)(10)=4 N·m.
The same force is applied at the same point but now along the wrench toward the pivot. What torque magnitude results?
Correct answer: A. The line of action passes through the pivot, so θ=0° and τ=rF sin0°=0.
For a fixed force magnitude, which change increases torque most directly?
Correct answer: C. Torque magnitude equals F times the perpendicular lever arm, so a larger lever arm increases torque.
Pushing directly toward a door hinge produces little/no torque. Which Topic 5.3 concept most directly explains this physical situation?
Correct answer: C. Perpendicular component: Only the force component perpendicular to the radius contributes to torque.
Which statement best defines Perpendicular component in Topic 5.3?
Correct answer: A. Correct definition: Only the force component perpendicular to the radius contributes to torque.
A second situation is observed: A force perpendicular to a wrench handle gives maximum torque for fixed r and F. Which concept is being applied?
Correct answer: B. Perpendicular component is the matching concept because Only the force component perpendicular to the radius contributes to torque.
A downward force on the right side of a pivot may produce clockwise torque. Which Topic 5.3 concept most directly explains this physical situation?
Correct answer: C. Torque sign: Clockwise and counterclockwise torques can be assigned opposite signs.
Which statement best defines Torque sign in Topic 5.3?
Correct answer: A. Correct definition: Clockwise and counterclockwise torques can be assigned opposite signs.
A second situation is observed: A downward force on the left side may produce counterclockwise torque. Which concept is being applied?
Correct answer: B. Torque sign is the matching concept because Clockwise and counterclockwise torques can be assigned opposite signs.
The same force on a rod has different torque about its center and about one end. Which Topic 5.3 concept most directly explains this physical situation?
Correct answer: C. Axis dependence: Torque depends on the chosen rotation axis.
Which statement best defines Axis dependence in Topic 5.3?
Correct answer: A. Correct definition: Torque depends on the chosen rotation axis.
A second situation is observed: Choosing a hinge as axis can simplify a door problem. Which concept is being applied?
Correct answer: B. Axis dependence is the matching concept because Torque depends on the chosen rotation axis.
Equal opposite torques can balance a seesaw. Which Topic 5.3 concept most directly explains this physical situation?
Correct answer: C. Net torque: Rotational response depends on the sum of torques.
Which statement best defines Net torque in Topic 5.3?
Correct answer: A. Correct definition: Rotational response depends on the sum of torques.
A second situation is observed: A larger counterclockwise torque than clockwise torque gives net CCW torque. Which concept is being applied?
Correct answer: B. Net torque is the matching concept because Rotational response depends on the sum of torques.
Which relationship best represents this Topic 5.3 idea: Torque magnitude about an axis?
Correct answer: B. Use τ = rF sinθ = r⊥F. Torque magnitude about an axis.
In Topic 5.3, which variable-and-unit description belongs with τ = rF sinθ = r⊥F?
Correct answer: C. For τ = rF sinθ = r⊥F: τ: N·m; r: m; F: N
For Topic 5.3, consider this real application: 0.5 m × 20 N perpendicular gives 10 N·m. Which relationship supports that result?
Correct answer: A. The relevant relationship is τ = rF sinθ = r⊥F.
Which relationship best represents this Topic 5.3 idea: Combine signed torques?
Correct answer: B. Use τ_net = Στ. Combine signed torques.
In Topic 5.3, which variable-and-unit description belongs with τ_net = Στ?
Correct answer: C. For τ_net = Στ: N·m
For Topic 5.3, consider this real application: +12 and −7 N·m give +5 N·m. Which relationship supports that result?
Correct answer: A. The relevant relationship is τ_net = Στ.
Which relationship best represents this Topic 5.3 idea: Perpendicular lever arm?
Correct answer: B. Use r⊥ = r sinθ. Perpendicular lever arm.
In Topic 5.3, which variable-and-unit description belongs with r⊥ = r sinθ?
Correct answer: C. For r⊥ = r sinθ: r⊥: m
For Topic 5.3, consider this real application: Useful when force is not perpendicular to radius. Which relationship supports that result?
Correct answer: A. The relevant relationship is r⊥ = r sinθ.
In Topic 5.3, analyze this situation: Push the door perpendicular to its surface at the handle. Which conclusion is most consistent with the physics?
Correct answer: C. Large r and perpendicular force produce large torque.
Which Topic 5.3 worked example best illustrates this reasoning: “Large r and perpendicular force produce large torque”?
Correct answer: B. Door handle: Push the door perpendicular to its surface at the handle.
A student is deciding how to begin the “Door handle” situation. What is the best first move?
Correct answer: B. Start with the physical model. Large r and perpendicular force produce large torque.
In Topic 5.3, analyze this situation: Children on opposite sides exert gravitational torques. Which conclusion is most consistent with the physics?
Correct answer: C. Balance depends on weight times lever arm, not weight alone.
Which Topic 5.3 worked example best illustrates this reasoning: “Balance depends on weight times lever arm, not weight alone”?
Correct answer: B. Seesaw: Children on opposite sides exert gravitational torques.
A student is deciding how to begin the “Seesaw” situation. What is the best first move?
Correct answer: B. Start with the physical model. Balance depends on weight times lever arm, not weight alone.
In Topic 5.3, analyze this situation: The same force is applied at different angles. Which conclusion is most consistent with the physics?
Correct answer: C. Torque is greatest at 90° because sinθ is maximal.
Which Topic 5.3 worked example best illustrates this reasoning: “Torque is greatest at 90° because sinθ is maximal”?
Correct answer: B. Wrench angle: The same force is applied at different angles.
A student is deciding how to begin the “Wrench angle” situation. What is the best first move?
Correct answer: B. Start with the physical model. Torque is greatest at 90° because sinθ is maximal.
In Topic 5.3, a student claims: “Torque and force have the same units/meaning.” Which correction is best?
Correct answer: B. Torque is rotational effect with units N·m, not force.
Which statement should replace this misconception in a Topic 5.3 solution: “Torque and force have the same units/meaning.”?
Correct answer: A. Torque is rotational effect with units N·m, not force.
In Topic 5.3, a student claims: “A large force always gives a large torque.” Which correction is best?
Correct answer: B. Torque can be zero if applied through the axis.
Which statement should replace this misconception in a Topic 5.3 solution: “A large force always gives a large torque.”?
Correct answer: A. Torque can be zero if applied through the axis.
In Topic 5.3, a student claims: “Torque is independent of the chosen axis.” Which correction is best?
Correct answer: B. Axis choice changes r and therefore torque.
Which statement should replace this misconception in a Topic 5.3 solution: “Torque is independent of the chosen axis.”?
Correct answer: A. Axis choice changes r and therefore torque.
What should a student identify before calculating in Topic 5.3?
Correct answer: B. Choose an axis, determine lever arm/perpendicular force component, assign torque sign, and compare rotational effectiveness.
Which statement best describes the AP Physics 1 scope for Topic 5.3?
Correct answer: B. Use signed scalar torque for planar AP Physics 1 rotational problems.
Which study sequence best matches this Topic 5.3 lesson?
Correct answer: B. The lesson is intentionally definition-first and explains terminology on the same page before equations and practice.