The document discusses key concepts related to center of gravity including that it is the point where the weight of an object is considered to act, that balancing and stability relate to center of gravity, and that free fall and circular motion involve the effects of gravity and centrifugal/centripetal forces. Videos are provided to demonstrate these concepts visually.

2. CENTRE OF GRAVTY:
• The imaginary point in a body at which the
weight of the body appears to act is called
centre of gravity
• balancing point
• Represented by COG,or CG

6. Video of centre of gravity

16. Stand with right shoulder and foot against the wall
and raise your left foot. Stand with your heels against
the floor and try to touch your toes.

22. Video of stability-centre of gravity exp

32. FREE FALL
•It is any motion of a body
where gravity is the only
force acting on them

36. CIRCULAR MOTION
• Motion of a body in circular path
• Radius is constant
• Direction changes
• Velocity changes
• Speed can be constant or not
• Kinetic energy changes

39. Video of centripetal centrifugal force

51. Video of gravitation

57. THE END