Which of the following expressions gives the tangential (linear) acceleration of a…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

Which of the following expressions gives the tangential (linear) acceleration

a_t

of a point located a distance

r

from the axis of rotation when the object has an angular acceleration

\alpha

? (a)

a_t = r\omega^{2}

(b)

a_t = r\alpha

(c)

a_t = \dfrac{1}{2}\,r\alpha

(d)

a_t = r(\alpha+\omega^{2})