What is rotational motion ? Explain it with example.
What is rotational motion ? Explain it with example.
Here rigid body as a solid metallic or wooden cylinder.
This cylinder shifts from the top of bottom of the inclined plane and thus it has translation motion.
All its particles are not moving with the same velocity at any instant. The particle near from the axis of cylinder has less velocity and particles for away from the axis of cylinder has more velocity. Such type of cylinder velocity is not pure translation it has combined velocity of rotation with it. The line along which the body is fixed is termed as its axis of rotation, its motion known as rotational motion.
If all the particles motion of a rigid body move along circular path and the centre of all these circles fall
on a definite straight line then the motion of the body is called the rotational motion.
If all the particles of a rigid body perform circular motion and the centres of these circles are steady on a definate straight line called axis of rotation.
Examples of rotation motion : A ceiling fan, a potter's wheel, a giant wheel in a fair, a marry-goround etc.
Similar Questions
$A$ uniform cylinder of mass $m$ can rotate freely about its own axis which is horizontal.$A$ particle of mass mo hangs from the end of a light string wound round the cylinder which does not slip over it. When the system is allowed to move, the acceleration of the descending mass will be
$A$ uniform cylinder of mass $m$ can rotate freely about its own axis which is horizontal.$A$ particle of mass mo hangs from the end of a light string wound round the cylinder which does not slip over it. When the system is allowed to move, the acceleration of the descending mass will be
What is pure translational motion ?
What is pure translational motion ?
A solid sphere rotates about a vertical axis on frictionless bearing. A massless cord passes around the equator of sphere, then passes through over a solid cylinder and then is connected to block of mass $M$ as shown in figure. If the system is released from rest then the speed acquired by block after it has fallen through distance $h$ is
A solid sphere rotates about a vertical axis on frictionless bearing. A massless cord passes around the equator of sphere, then passes through over a solid cylinder and then is connected to block of mass $M$ as shown in figure. If the system is released from rest then the speed acquired by block after it has fallen through distance $h$ is
A cylinder of mass $M$ and radius $r$ is mounted on a frictionless axle over a well. A rope of negligible mass is wrapped around the cylinder and a bucket of mass $m$ is suspended from the rope. The linear acceleration of the bucket will be
A cylinder of mass $M$ and radius $r$ is mounted on a frictionless axle over a well. A rope of negligible mass is wrapped around the cylinder and a bucket of mass $m$ is suspended from the rope. The linear acceleration of the bucket will be
Let $\mathop A\limits^ \to $ be a unit vector along the axis of rotation of a purely rotating body and $\mathop B\limits^ \to $ be a unit vector along the velocity of a particle $ P$ of the body away from the axis. The value of $\mathop A\limits^ \to .\mathop B\limits^ \to $ is
Let $\mathop A\limits^ \to $ be a unit vector along the axis of rotation of a purely rotating body and $\mathop B\limits^ \to $ be a unit vector along the velocity of a particle $ P$ of the body away from the axis. The value of $\mathop A\limits^ \to .\mathop B\limits^ \to $ is