An electrical motor spins at a constant $2695.0 \mathrm { rpm } .$ If the rotor radius is $7.165 \mathrm {~cm} ,$ what is the linear acceleration of the edge of the rotor? A)5707 m/s² B)281.6 m/s² C)572,400 m/s² D)28.20 m/s²

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Quizplus · Accepted Answer

The correct answer is A because the linear acceleration of the edge of the rotor is given by:$$a = r \omega^2 = (0.07165 \ m) \left( \frac{2695 \ rev}{min} \cdot \frac{2\pi rad}{rev} \cdot \frac{1 min}{60 s} \right)^2 = 5707 \ m/s^2$$

An Electrical Motor Spins at a Constant 2695.0rpm.2695.0 \mathrm { rpm } .2695.0rpm.

An Electrical Motor Spins at a Constant $2695.0 \mathrm { rpm } .$