12. Rotational Kinematics
Rotational Velocity & Acceleration
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ANSWERS OPTIONS
A
αav-z = 0.580 rad/s2; αz = -4.70 rad/s2
B
αav-z = -2.35 rad/s2; αz = -2.35rad/s2
C
αav-z = 0.580 rad/s2; αz = -2.35 rad/s2
D
αav-z = -2.35 rad/s2; αz = -4.70 rad/s2
The equation ωz(t) = B - Dt2 gives the angular velocity of a rotating particle, where B = 3.80 rad/s and D = 0.940 rad/s3. Determine the average angular acceleration for the interval t = 0 - 2.50 s and instantaneous angular acceleration when t = 2.50 s. αav-z = ? αz = ?
αav-z = 0.580 rad/s2; αz = -4.70 rad/s2
αav-z = -2.35 rad/s2; αz = -2.35rad/s2
αav-z = 0.580 rad/s2; αz = -2.35 rad/s2
αav-z = -2.35 rad/s2; αz = -4.70 rad/s2