A Disk (Radius = 8

question 23

Multiple Choice

A disk (radius = 8.0 cm) that rotates about a fixed axis starts from rest and accelerates at a constant rate to an angular velocity of 4.0 rad/s in 2.0 s. What is the magnitude of the total linear acceleration of a point on the rim of the disk at the instant when the angular velocity of the disk is 1.5 rad/s?

• A) 24 cm/s²
• B) 16 cm/s²
• C) 18 cm/s²
• D) 34 cm/s²
• E) 44 cm/s²

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