Question

Which of the following equations is(are) wrong?

• A. $\tau =rF$
• B. $a_r=\omega v^2$
• C. $a_t=r\alpha$
• D. $v=r\omega$

Answer 1

The correct option is B $a_r=\omega v^2$

The relation between linear velocity and angular velocity is $v=r\omega$.
Similarly,the relation between linear acceleration and angular acceleration is $a=r\alpha$.
$\tau =rF$
$a_t=r\alpha$
$v=r\omega$
So, option B is wrong.