angular acceleration

noun

, Physics.

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

angular acceleration

noun

1. the rate of change of angular velocity
2. astronautics the acceleration of a space vehicle around an axis

angular acceleration

/ 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.

Word History and Origins

Origin of angular acceleration¹

First recorded in 1880–85

Example Sentences

G is determined from the angular acceleration of the turntable associated with the torsion balance when the amount of twisting of the fibre is reduced to zero.

From Nature

In the real world of sport, the point of inception of every vector such as displacement, velocity, linear momentum linear acceleration, force, and angle, angular velocity, angular momentum, angular acceleration and torque, also matter.

From New York Times

John Lloyd, one of the researchers, says helmet add-ons tend to focus on reducing linear acceleration, which some sports injury experts say is less linked to concussions than angular acceleration is.

From Newsweek

Compared to helmets without add-ons, those fitted with the Guardian Cap, Concussion Reduction Technology and Shockstrips reduced linear accelerations by about 11 percent, but only reduced angular accelerations by 2 percent.

From US News

The rotation rate is so fast that the angular acceleration at the sphere surface is one billion times that of gravity on the Earth surface.

From BBC