Topics
Units and Measurements
Mathematical Methods
Motion in a Plane
Laws of Motion
 Introduction to Laws of Motion
 Aristotle’s Fallacy
 Newton’s Laws of Motion
 Inertial and Noninertial Frames of Reference
 Types of Forces
 Work Energy Theorem
 Principle of Conservation of Linear Momentum
 Collisions
 Impulse of Force
 Rotational Analogue of a Force  Moment of a Force Or Torque
 Couple and Its Torque
 Mechanical Equilibrium
 Centre of Mass
 Centre of Gravity
Gravitation
 Introduction to Gravitation
 Kepler’s Laws
 Newton’s Universal Law of Gravitation
 Measurement of the Gravitational Constant (G)
 Acceleration Due to Gravity (Earth’s Gravitational Acceleration)
 Variation in the Acceleration Due to Gravity with Altitude, Depth, Latitude and Shape
 Gravitational Potential and Potential Energy
 Earth Satellites
Mechanical Properties of Solids
Thermal Properties of Matter
Sound
Optics
Electrostatics
Electric Current Through Conductors
 Electric Current
 Flow of Current Through a Conductor
 Drift Speed
 Ohm's Law
 Limitations of Ohm’s Law
 Electrical Power
 Resistors
 Specific Resistance (Resistivity)
 Variation of Resistance with Temperature
 Electromotive Force (emf)
 Combination of Cells in Series and in Parallel
 Types of Cells
 Combination of Resistors  Series and Parallel
Magnetism
Electromagnetic Waves and Communication System
Semiconductors
 Projection of Satellite
 Weightlessness in a Satellite
 Time Period of a Satellite
 Binding Energy of an orbiting satellite
Notes
Earth Satellites:

Any object revolving around the earth.
Natural Satellite

Satellite created by nature.

Example:  Moon is the only natural satellite of the earth.
Artificial Satellites:

Humans built objects orbiting the earth for practical uses. There are several purposes which these satellites serve.
Example: Practical Uses of Artificial satellites are

Communication

Television broadcasts

Weather observation

Military support

Navigation

Scientific research
Determining the Time period of Earth Satellite:
Time taken by the satellite to complete one rotation around the earth is known as the time period of the satellite.
As satellites move in circular orbits there will be a centripetal force acting on it.
`"F"_c = "mv"^2/("R"_e + h)` it is towards the centre.
where,
h = distance of the satellite from the earth
`"F"_c` = centripetal force.
`"F"_G = ("GM"_e"m")/("R"_e + "h")^2`
where,
`"F"_g` = Gravitational force
m = mass of the satellite.
`"M"_e` = mass of the earth
`"F"_c = "F"_G`
`"mv"^2/("R"_e + "h")=("GM"_e"m")/("R"_e + "h")^2`
`"v"^2 = "GM"_e/("R"_e + "h")`
`"v" = sqrt("GM"_e/("R"_e +"h"))` ...(1)
This is the velocity with which satellite revolves around the earth.
The satellite covers distance = `2pi("R"_e +"h")` with velocity v.
`"T"=(2pi("R"_e + "h"))/"v"`
`(2pi("R"_e+"h"))/((sqrt"GM"_e)/("R"_e+"h"))` ...from(1)
`"T"=2pi("R"_e+h)^(3/2)/sqrt"GM"_e`
Special case:
h << `"R"_e` (satellite is very near to the surface of the earth)
Then `"T"=2pisqrt("R"_e^3/"GM"_e)`
After calculating
`"T" = 2pisqrt("R"_e/"g")`