- Main characteristics of mechanical phenomena
- Distance
- Displacement
- Speed
- Acceleration
- Speed
- Circular movement
- Uniform rectilinear motion (MRU)
- Freefall
- References
The mechanical phenomena are characterized by being associated with the balance or movement of objects. A mechanical phenomenon is a type of physical phenomenon that involves the physical properties of matter and energy.
As a general rule, anything that manifests itself can be defined as a phenomenon. A phenomenon is understood as something that appears or as an experience. There are physical, chemical, natural and biological phenomena; within each of them there are other subtypes. For example, within the physicists are mechanical phenomena.
Known mechanical phenomena include Newton's pendulum, which demonstrates conservation of momentum and energy using spheres; the motor, a machine designed to convert a form of energy into mechanical energy; or the double pendulum.
There are several types of mechanical phenomena that have to do with the movement of bodies. Kinematics studies the laws of motion; inertia, which is the tendency of a body to stay in a state of rest; or sound, which are mechanical vibrations transmitted by an elastic medium.
Mechanical phenomena make it possible to identify the distance, displacement, speed, speed, acceleration, circular motion, tangential velocity, average velocity, average velocity, uniform rectilinear motion, and free fall of a motion, between others.
Main characteristics of mechanical phenomena
Distance
It is a numerical description to describe how far apart objects are. The distance can refer to a physical length or an estimate based on some other criteria.
Distance can never be negative and distance traveled never decreases. Distance is either a magnitude or a scalar, since it can be described by a single element in a numeric field that is often accompanied by a unit of measure.
Displacement
The displacement is a vector that indicates the shortest distance from the initial position to the final position of a body.
Quantify the distance and direction of an imaginary movement through a straight line from the initial position to the final position of the point.
The displacement of a body is the distance traveled by a body in a specific direction. This means that the final position of a point (Sf) is relative to its initial position (Si), and a displacement vector can be mathematically defined as the difference between the initial and final position vectors.
Speed
The velocity of an object is the time derivative of its position with respect to a reference frame, and is a function of time.
Speed is the equivalent of a specification of your speed and direction of movement. Speed is an important concept in kinematics, as it describes the motion of bodies.
Velocity is a vector of physical magnitude; magnitude and direction are needed to define it. The scalar absolute value, or magnitude of velocity, is called speed, being a coherent derived unit whose quantity is measured in meters per second.
To have a constant velocity, an object must have a consistent velocity in a constant direction. The constant direction implies that the object will move in a straight path, therefore a constant speed means a movement in a straight line at a constant speed.
Acceleration
It is the frequency of change of speed of an object with respect to time. The acceleration of an object is the net result of any and all forces acting on the object.
Accelerations are qualities of vector quantities and are added according to the law of parallelograms. Like any vector, the calculated net force is equal to the product of the object's mass and its acceleration.
Speed
The celerity or speed of an object is the magnitude of its speed (frequency of change of its position); for this reason it is a scalar quality. Speed has dimensions of distance divided by time. It is usually measured in kilometers or miles per hour.
The average speed of an object in a time interval is the distance traveled by the object divided by the length of the interval; the instantaneous speed is the limit of the average speed as the length of the time interval approaches zero.
According to space relativity, the highest speed at which energy or information can travel is the speed of light. Matter cannot reach the speed of light, as this would require an infinite amount of energy.
Circular movement
Circular motion is the motion of an object around the circumference of a circle or rotation through a circular path.
It can be uniform, with a constant angle of rotation frequency and constant speed; or non-uniform with a changeable rotation frequency.
Rotation around a fixed axis of a three-dimensional body involves a circular motion of its parts. The equations of motion describe the motion of the center of mass of a body.
Uniform rectilinear motion (MRU)
A rectilinear movement is a movement that travels in a straight line, therefore it can be described mathematically using a single spatial dimension.
Uniform rectilinear motion has a constant velocity or zero acceleration.
The rectilinear motion is the most basic motion. By Newton's first law of motion, objects that do not experience any net external force will continue to move in a straight line with a constant velocity until they are subjected to a net force.
Freefall
Free fall is any movement of a body where gravity is the only force acting on it. In the technical sense of the term, an object in free fall is not necessarily falling in the usual sense of the term.
An object moving upward would not normally be considered as falling, but if it is subject only to the force of gravity it would be in free fall.
In a uniform gravitational field, in the absence of other forces, gravity acts on each part of the body in a uniform way, producing weightlessness. This condition also occurs when the gravitational field is zero.
References
- Mechanical phenomenon. Recovered from thefreedictionary.com
- Characteristics of motion. Recovered from quizlet.com
- Acceleration. Recovered from wikipedia.org
- Describing motion with words. Recovered from physicsclassroom.com
- Circular motion. Recovered from wikipedia.org
- Speed & Velocity (2017) Recovered from physics.info
- Notes and figures on free fall (2016) Recovered from greenharbor.com
- Linear motion. Recovered from wikipedia.org