Question

A torgue of 50 Nm acting on a wheel at rest rotates it through 200 radians in 5 sec. Calculate the angular acceleration produced:

• A. 8 rad/sec2
• B. 4 rad/sec2
• C. 16 rad/sec–2
• D. 12p rad/sec–2

Answer 1

Answer: (C)

16 rad/sec–2

Answer 2

$\theta = \omega_{0}t + \frac{1}{2}\alpha t^{2} \Rightarrow 200 = \frac{1}{2}\alpha(5)^{2} \Rightarrow \mspace{6mu}\alpha = 16rad ⥂ / ⥂ s^{2}$