The Mechanical phenomena are characterized For being associated with the balance or movement of objects. A mechanical phenomenon is a type of physical phenomenon involving 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.
Known mechanical phenomena include Newton's pendulum, which demonstrates the conservation of momentum and energy using spheres; The engine, 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 maintain itself in a state of rest; Or sound, which are mechanical vibrations transmitted by an elastic medium.
Mechanical phenomena allow the identification of distance, displacement, speed, acceleration, circular motion, tangential velocity, average velocity, average speed, uniform rectilinear motion and free fall of a movement, between others.
Main features of mechanical phenomena
Distance
It is a numerical description to describe how separated objects are. The distance may refer to a physical length or to an estimate based on some other criterion.
The distance can never be negative and the distance traveled never decreases. The distance is a magnitude or a scalar, since it can be described by a single element in a numerical field that is often accompanied by a unit of measure.
Displacement
The displacement is a vector which indicates the shortest distance from the initial position to the final position of a body.
It quantifies 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 temporal derivative of its position with respect to a frame of reference, 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 movement of bodies.
Speed is a vector of physical magnitude; You need the magnitude and direction to define it. The absolute scalar value, or magnitude of velocity, is called velocity 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. Steady direction implies that the object will move in a straight path, so a constant velocity means a straight-line motion at a constant velocity.
Acceleration
It is the rate of change of speed of an object with respect to the 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 net force calculated is equal to the product of the mass of the object and its acceleration.
Speed
The speed or speed of an object is the magnitude of its velocity (frequency of change of its position); For this reason it is a scalar quality. Speed has distance dimensions 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 duration of the interval; The instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.
According to spatial relativity, the highest speed at which energy or information can travel is the speed of light. Matter can not reach the speed of light, as this would require an infinite amount of energy.
Circular movement
Circular motion is the movement 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 rotatable frequency of rotation.
Rotation about a fixed axis of a three-dimensional body involves a circular movement of its parts. The equations of motion describe the movement of the center of mass of a body.
Uniform rectilinear movement (MRU)
A rectilinear motion is a movement that travels in a straight line, so it can be described mathematically using a single spatial dimension.
The uniform rectilinear motion has a constant velocity or zero acceleration.
The rectilinear movement is the most basic movement. According to Newton's First Law of Motion , Objects that do not experience any external net force will continue to move in a straight line at a constant speed until subjected to a net force.
Freefall
The 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 upwards would not normally be considered as falling, but if it is only subject 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 uniformly, producing weightlessness. This condition also occurs when the gravitational field is zero.
References
- Mechanical phenomenon. Retrieved from thefreedictionary.com
- Characteristics of motion. Recovered from quizlet.com
- Acceleration. Retrieved from wikipedia.org
- Describing motion with words. Retrieved from physicsclassroom.com
- Circular motion. Retrieved from wikipedia.org
- Speed & Velocity (2017) Retrieved from physics.info
- Notes and figures on free fall (2016) Retrieved from greenharbor.com
- Linear motion. Retrieved from wikipedia.org