Physics · 2021
JEE Main · 26 August 2021, Shift 2 · Q9
A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius r such that r=L/(√…
A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius $\displaystyle r$ such that $\displaystyle r=\frac{L}{\sqrt{2}}$. The speed of particle will be :
Official answer
(1)
$\displaystyle \sqrt{\mathrm{rg}}$
More from Circular Motion
- A tube of length 50 cm is filled completely with an incompressible liquid of mass 250 g and closed at both ends. The tube is then rotated in…2022
- A stone tied to 180 cm long string at its end is making 28 revolutions in horizontal circle in every minute. The magnitude of acceleration of stone…2023
- A pendulum of length 2 m consists of a wooden bob of mass 50 g. A bullet of mass 75 g is fired towards the stationary bob with a speed v. The bullet…2022
- A small bob tied at one end of a thin string of length 1 m is describing a vertical circle so that the maximum and minimum tension in the string are…2021
- A particle of mass m is fixed to one end of a light spring having force constant k and unstretched length l. The other end is fixed. The system is…2020
- The given figure shows a loop-the-loop track having radius 760 c m. A car without engine starts from a platform at a distance ' h ' above the top of…2021
- A car is moving with a constant speed of 20 m / s in a circular horizontal track of radius 40 m. A bob is suspended from the roof of the car by a…2023
- A body of m kg slides from rest along the curve of vertical circle from point A to B in friction less path. The velocity of the body at B is: (given,…2024
JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.