Question #307103

an electric fan is rotating at 3.0 rad/s when at time t=0 it begins to constantly accelerate at 2.00 rad/s^2. The initial linear acceleration of the edge of the spinning part of the fan has a magnitude of 1.30 m/s^2. What is the radius of the spinning part of the fan?

Expert's answer

The linear acceleration "a" is lincked with the angular one "\\alpha" as follows:

where "r" is the radius of the circle. Thus, since "a= 1.3m\/s^2, \\alpha = 2rad\/s^2", obtain:

**Answer. **0.650m.

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