angular acceleration

American  

noun

Physics.

1. the time rate of change of angular velocity of a rotating body.

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angular acceleration British  

noun

1. the rate of change of angular velocity

2. astronautics the acceleration of a space vehicle around an axis

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angular acceleration Scientific  

/ ăng′gyə-lər /

1. The rate of change of angular velocity with respect to time. Angular acceleration is measured in revolutions per minute squared or in radians per second squared.

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Etymology

Origin of angular acceleration

First recorded in 1880–85

Example Sentences

Suppose one such train accelerates from rest, giving its 0.350-m-radius wheels an angular acceleration of 0.250 rad/s2 .

From Textbooks • Aug. 12, 2015

Figure 10.22 The muscle in the upper leg gives the lower leg an angular acceleration and imparts rotational kinetic energy to it by exerting a torque about the knee.

From Textbooks • Aug. 12, 2015

For example, the smaller a wheel, the smaller its linear acceleration for a given angular acceleration α .

From Textbooks • Aug. 12, 2015

For example, the greater the angular acceleration of a car's drive wheels, the greater the acceleration of the car.

From Textbooks • Aug. 12, 2015

Similarly, if a body is rotated round a vertical axis, we perceive only angular acceleration and not angular velocity.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" by Various