Rotational Motion Class 11 Physics Complete Chapter System of Particles Rotational Dynamics IIT JEE MAINS Advanced and NEET
147 videos • 1,798 views • by MP Alam | Physics for JEE & NEET 👉Full Playlist: https://www.youtube.com/playlist?list... 👉Download Pdf Book: https://books.eduventurez.in/product/... 👉Instagram: https://www.instagram.com/alam4952/ Rotational Kinematics In rotational kinematics, we will investigate the relation between kinematical parameters of rotation. We shall now revisit angular equivalents of the linear quantities: position, displacement, velocity and acceleration which we have already dealt in a circular motion. Axis of Rotation A rigid body of an arbitrary shape in rotation about a fixed axis (axis that does not move) called axis of rotation or rotation axis Types of Motion involving Rotation Rotation about a fixed axis (Pure rotation) Rotation about an axis of rotation (Combined translational and rotational motion) Rotation about an axis in the rotation (rotating axis – out of the scope of JEE) Rotation About a Fixed Axis Rotation of a ceiling fan, opening and closing of the door, rotation of our planet, rotation of hour and minute hands in analogue clocks are few examples of this type. Rotation about an axis of rotation Rolling is an example of this category. Arguably, the most important application of rotational physics is in the rolling of wheels and wheels like objects as our world now is filled with automobiles and other rolling vehicles. Rolling Motion of a body is a combination of both translational and rotational motion of a round-shaped body placed on a surface. When a body is set in a rolling motion, every particle of the body has two velocities – one due to its rotational motion and the other due to its translational motion (of the centre of mass), and the resulting effect is the vector sum of both velocities at all particles Kinetic Energy of Rotation The rapidly rotating blades of a table saw machine and the blades of a fan certainly have kinetic energy due to the rotation. If we apply the familiar equation to the saw machine as a whole, it would give us kinetic energy of its centre of mass only, which is zero. What is Torque Torque is a rotational analogue of force and expresses the tendency of a force applied to an object that causes the object to rotate about a given point. Rotational Equilibrium The centre of mass of a body remains in equilibrium if the total external force acting on the body is zero. This follows from the equation F = Ma. Similarly, a body remains in rotational equilibrium if the total external torque acting on the body is zero.Therefore a body in rotational equilibrium must either be in rest or rotation with constant angular velocity. rotation class 11 physics,rotation class 11th,rotation class 11 physics neet,rotation chapter physics class 11,rotation class 11 iit jee,rotational motion class 11,rotational motion physics class 11,rotational motion one shot,rotational motion physics,rotational motion advanced questions,rotational motion all formulas,rotational motion crash course,rotational motion exercise,rotational motion full chapter,rotational motion for jee mains,rotational motion for neet What is Moment of Inertia? Moment of inertia is defined as the quantity expressed by the body resisting angular acceleration which is the sum of the product of the mass of every particle with its square of a distance from the axis of rotation. Or in more simple terms, it can be described as a quantity that decides the amount of torque needed for a specific angular acceleration in a rotational axis. Moment of Inertia is also known as the angular mass or rotational inertia. The SI unit of moment of inertia is kg m2. Moment of Inertia Formula What are the Factors on which Moment of Inertia Depends? Moment of Inertia of a System of Particles Moment of Inertia of Rigid Bodies Moment of Inertia of a Rectangular Plate about a Line Parallel to an Edge and Passing through the Centre Moment of Inertia of a Uniform Circular Plate about its Axis Moment of Inertia of thin Spherical Shell or Uniform Hollow Sphere Moment of Inertia of a uniform solid sphere Parallel Axis Theorem The moment of inertia of an object about an axis through its centre of mass is the minimum moment of inertia for an axis in that direction in space. Radius of Gyration Moment Of Inertia Of Cylinder Moment Of Inertia Of A Solid Cylinder Moment Of Inertia Of A Hollow Cylinder Moment Of Inertia Of Rectangular Section Moment Of Inertia Of Rectangular Plate Moment Of Inertia Of A Disc Moment Of Inertia Of Annular Disc Moment Of Inertia Of A Sphere Moment Of Inertia Of A Hollow Sphere Moment Of Inertia Of A Rod Moment Of Inertia Of A Triangle Moment Of Inertia Of Ellipse Moment Of Inertia Of A Cone Moment Of Inertia Of Solid Cone Moment Of Inertia Of Hollow Cone Moment Of Inertia Of A Square Moment Of Inertia Of A Circle Moment Of Inertia Of A Quarter Circle Moment Of Inertia Of Semicircle Moment Of Inertia Of A Ring Moment Of Inertia Of A Cube Moment Of Inertia Of Flywheel