5. Motion of System of Particles and Rigid Body
The chapter covers the motion of systems of particles and rigid bodies, highlighting the concepts of center of mass, linear momentum, rotational motion, and torque. It also discusses conditions for equilibrium, providing examples of rigid body motion and real-life applications. Essential principles such as conservation of momentum and moment of inertia are introduced, illustrating the interconnections among these concepts in physics.
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Sections
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What we have learnt
- Rigid bodies do not deform when force is applied, keeping the distance between particles constant.
- The center of mass for a system of particles determines how the system behaves under external forces.
- Net external forces and torques are critical for understanding the equilibrium of rigid bodies.
Key Concepts
- -- Centre of Mass
- A point representing the average position of the entire mass of a system.
- -- Linear Momentum
- The total momentum of a system, which is conserved in isolated systems unless affected by external forces.
- -- Moment of Inertia
- A measure of an object's resistance to changes in its rotational motion, depending on the mass distribution relative to an axis.
- -- Torque
- The rotational equivalent of force, which causes angular acceleration.
- -- Equilibrium
- A state where the net external force and net external torque acting on a body are zero.
Additional Learning Materials
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