Frames of Reference
You use the frame of reference to categorize your product so that people know that you have produced a communication device as opposed to a vehicle or a soft drink. The frame of reference concept clarifies the value proposition of your product and positions it within the market. Having established your frame of reference, you can begin to compare your product with similar types of product. When you do this, you highlight points of parity. You should only dwell on points of parity if your product offers your clients some kind of benefit that your competitors cannot offer.
Your cell phone may have the same features as your competitor's phone, in which case you have several points of parity. However, if your phone has clearer reception or cost's less, you can highlight those points of parity as a reason for consumers to buy your product rather than your competitor's. After using product similarities to your advantage, you must also look for points of difference to highlight the benefits that people enjoy when they buy your product.
If your car has safety features unavailable from other manufacturers, then those safety features are a point of difference that you should highlight. You should not publicize points of difference that reflect negatively on your brand. Do not highlight the fact that your car cannot drive as fast as cars sold by other manufacturers. You must build your marketing campaign and your brand around your frame of reference, including points of parity and difference. However, your frame of reference must evolve over time because benefits of your product that people overlooked at the outset may become more important in future years.
If your product proves more durable than similar types of products, then you should expand your frame of reference to incorporate that fact. You may also have to highlight new points of parity or difference to counter your competitor's marketing campaigns. From the bystander's perspective, he or she can see that the vehicle started moving.
Since the passenger was at rest, he or she wants to remain at rest. This feeling is your body resisting the movement due to inertia.
- Introduction to reference frames.
- Frame of Reference | Types - Inertial and Non-Inertial Frame of Reference.
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From the passenger's perspective there is no movement, and it feels like a force has just suddenly been applied to his or her body. We call this kind of phenomenon from the passenger's perspective a fictional force. A fictional force , also known as a pseudo-force, is defined as a force that is physically apparent to be acting on an object, but also does not appear to exist in a non-inertial frame of reference.
This can seem like quite a confusing concept, so let's look at another example of a fictional force. As a child, at some point you might have ridden a merry-go-round on a playground. It normally has railings for the children on it to hold onto. These are needed because when it's spinning, you can feel a force trying to throw you from the ride. We call this force the centrifugal force. A centrifugal force is a fictional force felt on a body that pushes out from a central axis around which it's rotating.
However, the centrifugal force is not a real force.
Neither is the feeling of acceleration from inside a vehicle. Both these fictional forces felt are effects of inertia. For a person on a merry-go-round, their body does not want to move in a circular motion, it wants to move in a straight line in accordance with inertia. You need to hold onto the merry-go-round's railings to keep yourself traveling in a circular path. If you were ever to let go, you would be thrown off the merry-go-round in a straight line in accordance with inertia. With regard to inertial frames of reference, let's go back to the bystander in the accelerating vehicle.
A scene from an inertial frame of reference, like standing on the street corner, the bystander would see the vehicle and the passenger as both moving forward or pushed in the direction of the acceleration. And again, the passenger in the non-inertial frame would think pseudo forces are pushing him or her in the opposite direction of the acceleration.
An inertial frame of reference is a reference frame, i. A non-inertial frame of reference is the reference frame where the property of inertia does not seem to hold true. In a scenario in which a bystander is observing a moving vehicle, the bystander will always be an inertial frame of reference. The passenger of the vehicle will be in a non-inertial frame of reference if the vehicle is accelerating.
When the property of inertia does not appear to hold true in non-inertial reference frames fictional forces are created. Centrifugal force is a fictional force felt on a body that pushes out from a central axis it is rotating around. This fictional force is not actually a force at all but an effect of inertia. To unlock this lesson you must be a Study. Create your account. Already a member? Log In. Did you know… We have over college courses that prepare you to earn credit by exam that is accepted by over 1, colleges and universities.
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Learn how to tell the difference between an inertial frame of reference and a non-inertial frame of reference.
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Then find out what these frames of reference have to do with Newton's first law and fictional forces. Inertial Frame of Reference At some point in your life, you've probably been on a form of public transportation. Fictional Forces So where does that feeling of pushing you back in your seat come from? Try it risk-free No obligation, cancel anytime.
Want to learn more? Lesson Summary Inertia is the property of matter in which an object that is at rest wants to remain at rest, and an object that is moving wants to remain moving in a straight line unless another force acts upon it. Key Terms Newtons First Law is the property of inertia Inertia : the property of matter in which an object that is at rest wants to remain at rest, and an object that is moving wants to remain moving in a straight line unless another force acts upon it Inertial frame of reference : a reference frame in when an object stays either at rest or at a constant velocity until another force acts on it Non-inertial frame of reference : when a body is not acting in accordance with inertia Fictional force : a force that is physically apparent to be acting on an object, but also does not appear to exist in a non-inertial frame of reference Centrifugal force : a fictional force felt on a body that pushes out from a central axis it's rotating around Learning Outcomes When you are done, you should be able to: State Newton's First Law and how it relates to inertia Explain the difference between an inertial and a non-inertial frame of reference Identify an example of a fictional force.
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