UG - TRB - PHYSICS - UNIT - 1 - MECHANICS - CENTER OF GRAVITY FULL VIDEO

UG - TET - PHYSICS - UNIT - 1 - MECHANICS - CENTER OF GRAVITY FULL VIDEO
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1.Foundation of mechanics
2.Newton’s laws
3. Impulse and impact
* laws of impact
* direct impact and oblique impact between two smooth spheres
* loss of K.E
* motion of two interacting bodies – reduced mass
4. Centre of gravity
* centre of gravity of a solid hemisphere
* hollow hemisphere
* tetrahedron and solid cone
5.Centre of mass
6. friction
* types of friction
* angle of friction
* equilibrium of rigid bodies
7. moment of inertia
* angular momentum and kinetic energy of a revolving body
* moment of inertia of sphere, shell and cylinder
* parallel and perpendicular axes theorem
* rolling
8.Gravitation and planetary motion
* Kepler’s laws of planetary motion
* Newton’s law of gravitation
* determination of G by Boy’s method
* gravitational field and potential
* variation of acceleration due to gravity on height, depth and altitude
9.Orbital mechanics and satellites
* orbital and escape velocities
* earth and geostationary satellites
10. limitations of Newton’s laws.

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