A point on a rotating turntable 22.0 cm from the center accelerates from rest to

Question

A point on a rotating turntable 22.0 cm from the center accelerates from rest to a final speed of 0.790 m/s in 1.70 s. At t = 1.20 s, find the magnitude and direction of each of the following.

(a) the radial acceleration
m/s2

toward the center

away from the center    

in the direction of the rotation

in a direction opposite to the rotation

(b) the tangential acceleration
m/s2

toward the center

away from the center   

in the direction of the rotation

in a direction opposite to the rotation

(c) the total acceleration of the point
m/s2

Explanation / Answer

(a) the radial acceleration
4m/s2

toward the center

away from the center    

in the direction of the rotation

in a direction opposite to the rotation

(b) the tangential acceleration
6m/s2

toward the center

away from the center   

in the direction of the rotation

in a direction opposite to the rotation

76(c) the total acceleration of the point
m/s2

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