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Because we're rotating with it

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Q: Why earth is considered as an inertial frame of reference although it is rotating?
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Difference between inertial frame of reference and non-inertial frame of reference?

An inertial frame of reference (FOR) is a non-accelerating FOR , for example if a person is observing a moving car while at rest or while moving at constant velocity, he is in an inertial FOR. A non-inertial frame of reference is an accelerating FOR for example a rotating FOR. ( Rotation requires centripetal force and centripetal acceleration so any rotating object always requires a centripetal acceleration to rotate.)


What is a coliolis effect?

Nothing.However in physics, the Coriolis force is an inertial force that acts on objects that are in motion relative to a rotating reference frame. In a reference frame with clockwise rotation, the force acts to the left of the motion of the object. In one with anticlockwise (or counterclockwise) rotation, the force acts to the right.


What is the significance of defining a coordinate system to study the motion of an object?

If the coordinate system is "inertial" (stationary, or moving in a straight line at a constant speed without rotation), then the motion will be the same as in any other inertial system, and Newton's laws of motion apply. If the coordinate system is not inertial (e.g. if it's rotating, or moving in circular path, or accelerating in a straight line), then Newton's laws of motion will not apply if the motion is calculated in the non-inertial frame. For example, if you are sitting at a table in a room that is slowly rotating, and roll a ball across the table, it will appear to move in a curved line across the table. But if you were looking from a stationary point above the room, you would see that the ball rolled in a straight line, and the table was moving under it.


What does coriolis affect mean?

deflection of moving objects when the motion is described relative to a rotating reference frame.


Why do you always have kinetic energy if you use the sun as a frame of reference?

because we are rotating around the sun so we are moving :)

Related questions

Difference between inertial frame of reference and non-inertial frame of reference?

An inertial frame of reference (FOR) is a non-accelerating FOR , for example if a person is observing a moving car while at rest or while moving at constant velocity, he is in an inertial FOR. A non-inertial frame of reference is an accelerating FOR for example a rotating FOR. ( Rotation requires centripetal force and centripetal acceleration so any rotating object always requires a centripetal acceleration to rotate.)


What is a coliolis effect?

Nothing.However in physics, the Coriolis force is an inertial force that acts on objects that are in motion relative to a rotating reference frame. In a reference frame with clockwise rotation, the force acts to the left of the motion of the object. In one with anticlockwise (or counterclockwise) rotation, the force acts to the right.


In a seismometer the pen is attached to an inertial mass suspended by a spring What is the rotating drum attached to?

the ground


Is centrifugal acceleration a uniform acceleration?

In the rotating frame, it can be (though it doesn't have to be). In an inertial frame, no (though it can be uniform in magnitude).


A particle in the surface of a mass of liquid moving with linear acceleration has its force acting each weight and the fictitious inertia force which is sometimes called as?

You may be referring to the 'fictitious' Coriolis effect or more correctly, Coriolis force. The Coriolis force is a fictitious force that arises from viewing things from the perspective of a rotating reference frame. When viewed from the perspective of an inertial frame, the "force" doesn't appear. We (on Earth) tend to use rotating reference frames because this view is convenient for describing behaviors that nearly co-rotate with Earth. Jeannie Heroux


In which chapter of BS 7671 would you find reference to rotating machines?

55


What is synchronous reference frame?

It has been shown that the speed of rotation of the d.q axes can be arbitrary although there are three preferred speeds or reference frames as follows: (a) the stationary reference frame when the d,q axes do not rotate; (b) the synchronously rotating reference frame when the d,q axes rotate at synchronous speed; (c) the rotor reference frame when the d,q axes rotate at rotor speed.


What is the significance of defining a coordinate system to study the motion of an object?

If the coordinate system is "inertial" (stationary, or moving in a straight line at a constant speed without rotation), then the motion will be the same as in any other inertial system, and Newton's laws of motion apply. If the coordinate system is not inertial (e.g. if it's rotating, or moving in circular path, or accelerating in a straight line), then Newton's laws of motion will not apply if the motion is calculated in the non-inertial frame. For example, if you are sitting at a table in a room that is slowly rotating, and roll a ball across the table, it will appear to move in a curved line across the table. But if you were looking from a stationary point above the room, you would see that the ball rolled in a straight line, and the table was moving under it.


What is the coreolis factor?

In physics, the Coriolis effect is a deflection of moving objects when they are viewed in a rotating reference frame.


What does coriolis affect mean?

deflection of moving objects when the motion is described relative to a rotating reference frame.


Why do you always have kinetic energy if you use the sun as a frame of reference?

because we are rotating around the sun so we are moving :)


What is corlolis effect?

It's the Coriolis Effect, not Corlolis- it is an inertial force that acts on objects that are in motion relative to a rotating reference frame. In a reference frame acting in a clockwise motion, the force acts on motion to the left of the object, whereas in an anticlockwise motion it acts to the right of the object. The effect upon matter that is deflected as a result of this, is known as the Coriolis Effect. It can be seen particularly clearly in the way that wind patterns move across the face of the earth, and move clockwise in the Northern Hemisphere by anticlockwise in the Southern Hemisphere.