Rotational Motion for JEE:

Rotational motion is the motion of a body around an axis. It is an important topic in physics and is frequently asked in JEE exams. Here is a brief overview of the topic:

1. Angular displacement:
Angular displacement is the change in the angle of a rotating body. It is measured in radians and is denoted by the symbol theta.

2. Angular velocity:
Angular velocity is the rate of change of angular displacement with respect to time. It is measured in radians per second and is denoted by the symbol omega.

3. Angular acceleration:
Angular acceleration is the rate of change of angular velocity with respect to time. It is measured in radians per second squared and is denoted by the symbol alpha.

4. Moment of inertia:
Moment of inertia is a measure of an object's resistance to rotational motion. It is denoted by the symbol I and depends on the shape and mass distribution of the object.

5. Torque:
Torque is the rotational equivalent of force. It is the product of the force and the perpendicular distance from the axis of rotation to the point where the force is applied. It is denoted by the symbol tau.

6. Newton's second law for rotational motion:
Newton's second law for rotational motion states that the net torque acting on an object is equal to the product of its moment of inertia and its angular acceleration.

7. Conservation of angular momentum:
Conservation of angular momentum states that the total angular momentum of a system remains constant if no external torque acts on it.

8. Rotational kinematics equations:
The rotational kinematics equations are similar to the linear kinematics equations and relate the angular displacement, velocity, acceleration, and time.

9. Rolling motion:
Rolling motion is a combination of translational and rotational motion. In rolling motion, a body moves without slipping.

In conclusion, rotational motion is an important topic in physics and is frequently asked in JEE exams. Understanding the basic concepts and equations is essential for success in the exam.