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4 cards from this section. Quick, good the night before a test.
What is the formula for angular acceleration?
Remember it relates change in angular velocity to time.
If a wheel makes 2 revolutions in one second and speeds up to 4 revolutions in two seconds, what is the angular acceleration?
Convert revolutions to radians.
What is angular acceleration?
Recall what acceleration means in general.
Is angular acceleration a scalar quantity?
Think about other physical quantities like velocity.
An aerospace engineer needs to simulate the angular acceleration of a new aircraft's wing rotation. The wing's angular velocity goes from 12 rad/s to 30 rad/s in 8 seconds. Calculate the necessary angular acceleration.
Fill in the formula of Δω over Δt.
A planet's rotation speed increases from 7.5 rad/s to 9.5 rad/s over 5 seconds due to gravitational effects. What is the angular acceleration?
Look at the difference in the speed during the specified time.
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