Topic — Representative point of a system of masses and its dynamical properties.
Present in chapters
06
Linked atoms
49 linked atoms.
06 Centre of mass
- Seesaw and fulcrum
- Geometric centroid
- Centre of mass of two masses on the x-axis
- Centre of mass of three masses in a plane
- Definition of the centre of mass
- Proof of König’s theorem
- Proof of König’s theorem
- Disc with a tangent hole
- Where the centroid falls (rod and ball)
- Two blocks with a spring and the CM graph
- Internal kinetic energy of two balls
- Internal kinetic energy and temperature
- Internal energy of the system
- Gravitational potential energy of the CM
- Worked exercise — Circle with a hole
- Worked exercise — Fictitious gas of two balls
- Worked exercise — The cat on the trolley
- Explosion and total momentum
- What-if physics: instantaneously variable mass
- What-if physics: third law broken
- Push force in a vertical jump
- Summarised and decomposed quantities
- The anti-matter method
- The boy walking on the boat
- The centre-of-mass frame
- The rotating diver
- The hourglass on the scale
- The velocity of the centre of mass
- Graph reading: CM position
- The little arrow diagram
- Angular momentum
- Why the centre of mass is a useful concept
- Person walking on the boat
- Person on the boat
- Ranking of the CM height of plane figures
- Ranking of pairs of masses on a line
- Ranking of the CM distance in dumbbells
- Rocket exploding mid-trajectory
- Rocket in deep space
- Newton’s second law for the CM
- Challenge: chain on a table
- König’s theorem for angular momentum
- König’s theorem for kinetic energy
- Three bodies on an axis
- Three masses on an axis
- Finding the masses from the CM
- A point that does not exist
- Velocity and momentum of the CM
- True or false on the centre of mass