AP Physics C: Mechanics 5.1 Rotational Kinematics Questions

Practise describing rotation through angular position, velocity and acceleration by using derivatives, constant-acceleration relationships and time-based graphs.

Exam points

derive angular velocity and acceleration from angular-position functions and signs
use constant-angular-acceleration equations to solve for angle, speed or time
interpret or sketch rotation graphs using initial values, slopes, areas and curvature

Covered syllabus points

5.1.A—Describe the rotation of a system with respect to time using angular displacement, angular velocity, and angular…

[Maximum number: 2]

A wind turbine includes a three-blade system that rotates about an axis through the end of each blade, as shown in Figure 1. Each blade has a length L and mass M, with a center of mass located at a distance $\frac{L}{3}$ from the axis of rotation, as shown in Figure 2.

On the graph in Figure 4, sketch the angular speed of the second three-blade system as a function of time t.

For drawing a continuous curve showing an exponential decay

1 point

For starting at $\omega=2.6 \mathrm{rad} / \mathrm{s}$ and drawing a curve below the original curve

1 point

Example Solution

Figure for Answer to Question 1 — AP Physics C: Mechanics

Total for part (d) for question 315 points

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Covered syllabus points

Question 1