A ceiling-fan blade of length starts from rest and reaches an angular speed of in…

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A ceiling-fan blade of length

0.40\,\text{m}

starts from rest and reaches an angular speed of

200\,\text{rev}\!\cdot\!\text{min}^{-1}

6.0\,\text{s}

under constant angular acceleration. What is the magnitude of the tangential acceleration of the blade tip during this interval? (a)

8.4\,\text{m}\,\text{s}^{-2}

(b)

0.70\,\text{m}\,\text{s}^{-2}

(c)

1.4\,\text{m}\,\text{s}^{-2}

(d)

2.8\,\text{m}\,\text{s}^{-2}