System of particles and rotational motion

This energy loss is small for one elbow but if you have several elbows and other fittings the total can become significant. By analogy, as the cyclist comes down the hill he looses his stored elevation energy which is transformed progressively into velocity energy. The velocity at which the other player comes at you determines how hard you are hit.

To demonstrate the use of Oxygen and Carbon Dioxide in respiration you can look at the amounts of both gases which we inhale and then exhale. Figure 14 The smaller the pipe, the less the flow.

Each has a specific function to aid the flow of air into the body. If you let it discharge it can drive something useful like a turbine producing electricity.


This is equivalent to a cyclist on a flat road, his velocity depends on the amount of friction between the wheels and the road and the air resistance see Figure Figure 10 See this video for the effect of static head and friction.

Figure 9 Energy and head in pump systems Energy and head are two terms that are often used in pump systems. Friction energy is the energy that is lost to the environment due to the movement of the liquid through pipes and fittings in the system. While velocity can have either a positive or negative value, velocity squared will always be positive.

This is evidenced by day and nightat the equator the earth has an eastward velocity of 0. To maintain rotation around a fixed axis, the total torque vector has to be along the axis, so that it only changes the magnitude and not the direction of the angular velocity vector. Or in other words, if the pressure changes due to outside factors, how does the pump respond to this change.

How does the pump adjust itself to the diameter of the pipe, after all it does not know what size pipe will be installed? If the pipe end is lowered as in Figure 10, the pump flow will increase and the head also known as total head will decrease to a value that corresponds to the flow. This shows a decrease in Oxygen levels as it is used in producing energy and an increase in Carbon Dioxide due to it being a waste product of energy production.

If a disk spins counterclockwise as seen from above, its angular velocity vector points upwards. Similar to the fan, equipment found in the mass production manufacturing industry demonstrate rotation around a fixed axis effectively. Develop scientific critical thinking and reasoning skills through inquiry based learning.

Thus, a body can rotate even if the sum of external forces on it is zero. This motion can be detected as temperature; higher temperatures, which represent greater kinetic energy in the particles, feel warm to humans who sense the thermal energy transferring from the object being touched to their nerves.

For the example of the Earth rotating around its axis, there is very little friction.

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Those pumps produce constant flow no matter what changes are made to the system. Flow rate depends on friction For identical systems, the flow rate will vary with the size and diameter of the discharge pipe. Internal body[ edit ] The human heart is constantly contracting to move blood throughout the body.

For a fanthe motor applies a torque to compensate for friction. Figure 21 So that at gpm, this pump produces 20 psig discharge pressure, and as the flow drops the pressure will reach a maximum of 40 psig. Thus, the torque of a force depends on the perpendicular distance of the point of application of the force from the rotation axis i.

The same happens with Carbon Dioxide CO2. The trachea is surrounded by C-shaped rings of cartilage at the front and side which help protect the trachea and keep it open. When a pump is used to displace a liquid to a higher level it is usually located at the low point or close to it.

Fill it with water and attach a string to it, and now you guessed it, start spinning it.

Respiratory System Function

Similarly, the angular acceleration vector points along the axis of rotation in the same direction that the angular velocity would point if the angular acceleration were maintained for a long time. In the case of a pump, the rotational motion of the impeller projects fluid particles at high speed into the volume between the casing wall and the impeller tips.

Figure 12 If the discharge pipe end is lower than the liquid surface of the suction tank then the static head will be negative and the flow rate high see Figure This is also known as the voice box as it is where sound is generated.

Assuming that you want to fill the bath as quickly as possible, then the taps on the bath will be fully open and will offer very little resistance or friction loss. At the same time the static head is reduced which further reduces the total head.

It is expressed in terms of feet in the Imperial system and meters in the metric system. In the general case, angular displacement, angular velocity, angular acceleration and torque are considered to be vectors. Since there is no flow the head also called total head that the pump produces is equal to the static head.

Once inside the lung the bronchi split several ways, forming tertiary bronchi. Types of motion[ edit ] Simple harmonic motion — e.motion - Translation to Spanish, pronunciation, and forum discussions. The respiratory system organs are separated into the upper and lower respiratory tracts.

AP Physics 1: Algebra-Based

The upper respiratory tract includes the mouth, nose, nasal cavity, pharynx (wind pipe and food pipe) and larynx or voice box.


Motion (physics)

Introduction Justasfortranslationalmotion(motioninastraightline),circularor. There is a very important assumption while we try to follow the rotational motion of a body.

We assume that all the particles of the body in motion. In physics, motion is a change in position of an object over time.

Motion is mathematically described in terms of displacement, distance, velocity, acceleration, time, and of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame.

If the position. Energy and head in pump systems. Energy and head are two terms that are often used in pump systems. We use energy to describe the movement of liquids in pump systems because it is easier than any other method.

System of particles and rotational motion
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