AP Physics 1: Algebra-Based 5.2 Connecting Linear and Rotational Motion Questions

Connect angular and linear motion by comparing speeds at different radii and tracking how velocity behaves as a point travels around a circle.

Exam points

use v = ωr to compare linear speeds at different radii while angular speed is shared
distinguish changing linear-velocity direction from constant angular velocity in circular motion

Covered syllabus points

5.2.A—Describe the linear motion of a point on a rotating rigid system that corresponds to the rotational motion of…

[Maximum number: 1]

Figure for Question 1 — AP Physics 1: Algebra-Based

(7 points, suggested time 13 minutes) Two ladybugs are standing on a rotating disk that is spinning counterclockwise, as shown in the figure above. Assume that friction in the bearings of the axle is negligible.

(a)

Is the linear speed of ladybug A greater than, less than, or the same as the linear speed of ladybug B ? Greater Less The same Briefly justify your answer.

ii. 1 point

Correct answer: "Greater"

For selecting "Greater" and explaining that linear speed is proportional to (or increases

with) distance from the center $(v=\omega R)$

Notes: No credit is earned if the wrong answer is selected.

No credit is earned for a correct selection with a wrong explanation or no explanation given.

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Covered syllabus points

Question 1