Page 2
Thermodynamics vs. Mechanics
In Thermodynamics, we consider only the state of the object,
which means we will only consider macroscopic variables like
pressure, volume, and temperature.
In Mechanics, we consider the motion, velocity, and
acceleration of the object.
For Example: In Mechanics, if a bullet is fired from a gun, we will consider
the motion of the bullet and its velocity, acceleration, etc.
Page 3
Thermodynamics vs. Mechanics
In Thermodynamics, we consider only the state of the object,
which means we will only consider macroscopic variables like
pressure, volume, and temperature.
In Mechanics, we consider the motion, velocity, and
acceleration of the object.
For Example: In Mechanics, if a bullet is fired from a gun, we will consider
the motion of the bullet and its velocity, acceleration, etc.
Consider a second scenario where the bullet is
fired at a wall.
When it hits the wall, its kinetic energy gets
converted to heat.
Due to heat generation, there will be a change
in temperature and the internal energy of the
bullet.
These are the macroscopic variables, which
we study in Thermodynamics.
Page 4
Thermodynamics vs. Mechanics
In Thermodynamics, we consider only the state of the object,
which means we will only consider macroscopic variables like
pressure, volume, and temperature.
In Mechanics, we consider the motion, velocity, and
acceleration of the object.
For Example: In Mechanics, if a bullet is fired from a gun, we will consider
the motion of the bullet and its velocity, acceleration, etc.
Consider a second scenario where the bullet is
fired at a wall.
When it hits the wall, its kinetic energy gets
converted to heat.
Due to heat generation, there will be a change
in temperature and the internal energy of the
bullet.
These are the macroscopic variables, which
we study in Thermodynamics.
Page 5
Thermodynamics vs. Mechanics
In Thermodynamics, we consider only the state of the object,
which means we will only consider macroscopic variables like
pressure, volume, and temperature.
In Mechanics, we consider the motion, velocity, and
acceleration of the object.
For Example: In Mechanics, if a bullet is fired from a gun, we will consider
the motion of the bullet and its velocity, acceleration, etc.
Consider a second scenario where the bullet is
fired at a wall.
When it hits the wall, its kinetic energy gets
converted to heat.
Due to heat generation, there will be a change
in temperature and the internal energy of the
bullet.
These are the macroscopic variables, which
we study in Thermodynamics.
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