dynamic

(adjective)

Changing; active; in motion.

Related Terms

Examples of dynamic in the following topics:

  • First Condition

    • The condition $F_\text{net} = 0$ must be true for both static equilibrium, where the object's velocity is zero, and dynamic equilibrium, where the object is moving at a constant velocity.
    • Below, the car is in dynamic equilibrium because it is moving at constant velocity.
    • This car is in dynamic equilibrium because it is moving at constant velocity.

  • Application of Bernoulli's Equation: Pressure and Speed

    • The kinetic energy of the fluid is stored in static pressure, $p_s$, and dynamic pressure, $\frac{1}{2}\rho V^2$, where \rho is the fluid density in (SI unit: kg/m3) and V is the fluid velocity (SI unit: m/s).
    • The SI unit of static pressure and dynamic pressure is the pascal.
    • Static pressure is simply the pressure at a given point in the fluid, dynamic pressure is the kinetic energy per unit volume of a fluid particle.
    • Thus, a fluid will not have dynamic pressure unless it is moving.
    • Therefore, if there is no change in potential energy along a streamline, Bernoulli's equation implies that the total energy along that streamline is constant and is a balance between static and dynamic pressure.

  • Translational Equilibrium

    • In both cases – static or dynamic – net external forces and torques are zero.
    • In the second case, the particle is said to be in dynamic equilibrium.
    • Static or dynamic, these kinds of equilibrium can be categorized as translational equilibrium.
    • An example of dynamic (or mechanical) equilibrium is an object sliding down a wedge.

  • Flow Rate and Velocity

    • Flow velocity and volumetric flow rates are important quantities in fluid dynamics used to quantify motion of a fluid and are interrelated.
    • Fluid dynamics is the study of fluids in motion and corresponding phenomena.
    • In addition to flow velocity, volumetric flow rate is an important quantity in fluid dynamics analysis.
    • Volumetric flow rate is an important scalar quantity in fluid dynamics and is used widely in fluid flow measurements.

  • Constant Pressure and Volume

    • In other words, the system is dynamically connected, by a movable boundary, to a constant-pressure reservoir.
    • We may say that the system is dynamically insulated, by a rigid boundary, from the environment.

  • Friction: Kinetic

    • Kinetic (or dynamic) friction occurs when two objects are moving relative to each other and rub together; a sled on the ground would be a good example of kinetic friction.

  • Hydraulic Jump

    • Let's revist the dynamics of water travelling down a shallow channel.
    • We can apply the results from gas dynamics to hydraulics as along as the flow is abiabatic --- no shocks.

  • Winds

    • Here we are interested in the situation where the flow is more or less steady; that is, it lasts for many dynamical times.
    • as the material flows outward, so within a few stellar radii the angular momentum is no longer important to the dynamics of the flow.

  • Biological and Medical Applications

    • Fluid dynamics, the physics of fluids in motion, allows us to answer these and many other questions.
    • The heart, vessels and lungs are all actively involved in maintaining healthy cells and organs, and all influence the fluid dynamics of the blood.
    • Interpret the circulatory system in terms of your knowledge of fluid dynamics

  • Trigonometry

    • They can help analyze a problem, whether it is static or dynamic.