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Chapter: 11th Physics : UNIT 5 : Motion of System of Particles and Rigid Bodies

Summary - Physics: Motion of System of Particles and Rigid Bodies

Physics : Motion of System of Particles and Rigid Bodies

Summary

·           A rigid body is the one in which the distances between different particles remain constant.

·           For regular shaped bodies with uniform mass distribution, center of mass always lies at the geometrical center.

·           Net torque produces turning motion in rigid object.

·           A rigid body is in translational equilibrium if the total external force on it is zero. It is in rotational equilibrium if the total external torque on it is zero.

·           The center of gravity of an extended body is that point where the total gravitational torque on the body is zero.

·           If the external torque acting on the body is zero, the component of angular momentum along the axis of rotation is constant.

·           There are rotational equivalents for all the translational quantities.Rolling motion is the combination of translational and rotation motions.

·           Rolling can also be treated as the momentary rotation about the point of contact.

·           In pure rolling, the total kinetic energy is the sum of kinetic energies of translational and rotational motions.

·           In sliding the translational motion is more than rotational motion.

·           In slipping the rotational motion is more than translational motion.

 

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11th Physics : UNIT 5 : Motion of System of Particles and Rigid Bodies : Summary - Physics: Motion of System of Particles and Rigid Bodies |

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11th Physics : UNIT 5 : Motion of System of Particles and Rigid Bodies


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