Question

A wheel is at rest. It's angular velocity increases uniformly and becomes $80radianpersecond$ after $5seconds$. The total angular displacement is

• A. $800rad$
• B. $400rad$
• C. $200rad$
• D. $100rad$

Answer 1

Answer: (C)

$200rad$

${\omega }_0=0,\omega =80rad/s,t=5s$
$\theta =\left(\frac{{\omega }_0+\omega }{2}\right)t=\frac{80}{2}\times 5=$$200radian$.
hence,option $C$ is correct.