A particle is tied to 20 cm long string- It performs circular motion in vertical plane- What is the angular velocity of string when the tension in the string the is zero 5 rad - sec 2 rad - sec 7-5 rad - sec 7 rad - sec

Question

Toppr Admin · Accepted Answer

Mrw2-mgw-x221A-gr-x221A-9-80-2-7rad-secHence-option -D- is correct answer-

A particle is tied to $20$ cm long string. It performs circular motion in vertical plane. What is the angular velocity of string when the tension in the string at the top is zero
$5$ rad / sec
$2$ rad / sec
$7.5$ rad / sec
$7$ rad / sec

$\begin{matrix} m r w^{2} = m g w = \sqrt{\frac{g}{r}} = \sqrt{\frac{9.8}{0.2}} = 7 r a d / sec \end{matrix}$
Hence,
option $(D)$ is correct answer.

A particle is tied to 20 cm long string. It performs circular motion in vertical plane. What is the angular velocity of string when the tension in the string at the top is zero5 rad / sec2 rad / sec7.5 rad / sec7 rad / sec

mrw2=mgw=√gr=√9.80.2=7rad/secHence,option (D) is correct answer.

A particle is tied to $20$ cm long string. It performs circular motion in vertical plane. What is the angular velocity of string when the tension in the string at the top is zero
$5$ rad / sec
$2$ rad / sec
$7.5$ rad / sec
$7$ rad / sec

$\begin{matrix} m r w^{2} = m g w = \sqrt{\frac{g}{r}} = \sqrt{\frac{9.8}{0.2}} = 7 r a d / sec \end{matrix}$
Hence,
option $(D)$ is correct answer.