A ventilation fan has blades 0.25 m long rotating at 20 rpm.What is the centripetal acceleration of a point on the outer tip of a blade? A)1.1 m/s² B)0.87 m/s² C)0.55 m/s² D)0.23 m/s²

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Quizplus · Accepted Answer

The centripetal acceleration (a_c) is given by the formula a_c = ω²r, where ω is the angular velocity in radians per second and r is the radius. First, convert rpm to rad/s: 20 rpm = (20 * 2π) / 60 rad/s = 2π/3 rad/s. Then, a_c = (2π/3)² * 0.25 = 1.1 m/s².

A Ventilation Fan Has Blades 0