What is statics?
Classical mechanics is a branch of physics that deals with the
physical phenomenon of motion and describes and predicts the
state of motion of rigid bodies under the effects of forces. The study
objects are assumed to be armed deformable, which means they
can be deformed, but they are not allowed to change their shape or
size. We only study the static state, which means that we only
consider the motion of objects at a given point in time.
Fundamental concepts
Length is a measure used to describe the position of objects in
space, as well as their size and geometric properties. Time, on the
other hand, measures the succession of events, describing how one
event occurs before or after another in a specific manner. In
scientific modeling, we idealize phenomena to simplify them into a
model that can be easily understood. For instance, an object can be
represented as a particle when its size and geometry are
insignificant for the purpose of the study. A particle is a point in
space with no shape or size and only has mass as its property.
Conversely, unlike real-world objects, a rigid body lacks other
properties such as elasticity and won't deform under stress.
Newton's fundamental laws
Newton's second law states that an object's acceleration is
proportional to the unbalanced force acting upon it. In other words,
if there is a force acting on an object, its motion will accelerate. The
acceleration of the object will be proportional to the force causing it.
Interestingly, Newton's first law can be considered a special case of
the second law. The force that causes an object to fall is its weight,
which can be calculated using Newton's law of gravitation. A simple
way to calculate an object's weight is to multiply its mass by the
acceleration due to gravity, denoted by the variable g. In SI units, g
is 9.81 meters per second squared (m/s²), while in the US Customary
system; it is 32.2 feet per second squared (ft/s²).
Classical mechanics is a branch of physics that deals with the
physical phenomenon of motion and describes and predicts the
state of motion of rigid bodies under the effects of forces. The study
objects are assumed to be armed deformable, which means they
can be deformed, but they are not allowed to change their shape or
size. We only study the static state, which means that we only
consider the motion of objects at a given point in time.
Fundamental concepts
Length is a measure used to describe the position of objects in
space, as well as their size and geometric properties. Time, on the
other hand, measures the succession of events, describing how one
event occurs before or after another in a specific manner. In
scientific modeling, we idealize phenomena to simplify them into a
model that can be easily understood. For instance, an object can be
represented as a particle when its size and geometry are
insignificant for the purpose of the study. A particle is a point in
space with no shape or size and only has mass as its property.
Conversely, unlike real-world objects, a rigid body lacks other
properties such as elasticity and won't deform under stress.
Newton's fundamental laws
Newton's second law states that an object's acceleration is
proportional to the unbalanced force acting upon it. In other words,
if there is a force acting on an object, its motion will accelerate. The
acceleration of the object will be proportional to the force causing it.
Interestingly, Newton's first law can be considered a special case of
the second law. The force that causes an object to fall is its weight,
which can be calculated using Newton's law of gravitation. A simple
way to calculate an object's weight is to multiply its mass by the
acceleration due to gravity, denoted by the variable g. In SI units, g
is 9.81 meters per second squared (m/s²), while in the US Customary
system; it is 32.2 feet per second squared (ft/s²).
