A uniform disc of radius a and mass m is rotating freely with angular speed in a…
Physics · JEE Advanced · NTA Exams — Rotational Motion
A uniform disc of radius a and mass m is rotating freely with angular speed \(\boldsymbol{\omega}\) in a horizontal plane, about a smooth fixed vertical axis through its centre. A particle, also of mass m, is suddenly attached to the rim of the disc and rotates with it. The new angular speed is
- \(\boldsymbol{\omega} / \sqrt{3}\)
- \(\omega / 3\)
- \(\omega / \sqrt{5}\)
- \(\omega / 5\)
Answer
(B) / 3
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- A uniform rod of mass M = 2 kg and length L is suspended by two smooth hinges 1 and 2 as shown in the figure…
- A disc of circumference s is at rest at a point A on a horizontal surface when a constant horizontal force…
- A round uniform body of radius R, mass M and moment of inertia I, rolls down (without slipping) an inclined…
- A solid cube of side 1 m is just tilted by a horizontal force of 10 N. The weight of cube is
- A wheel of mass 2 kg, having practically all the mass concentrated along the circumference of a circle of…
- An unbanked curve has a radius of 60 m. The maximum speed at which a car can make a turn if the coefficient…
- Statement–1: The mass of a body cannot be considered to be concentrated at the centre of mass of the body for…
- A particle of mass m is attached to a light string which passes through a hollow tube. The tube is held by…
More Rotational Motion questions · Browse all practice questions