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==The Main Idea== | ==The Main Idea== | ||
'''In physics, weight describes the [[Gravitational Force]] upon a mass, usually relative to Earth or a planet.''' Depending on the source, weight may be defined as a scalar - the magnitude of the gravitational force on an object - or a vector equal to gravitational force. | |||
An object's weight is commonly confused with mass, but instead it is a force that depends on another body of matter, while mass is an intrinsic property of matter. | |||
===A Mathematical Model=== | ===A Mathematical Model=== | ||
A mass ''m'''s weight near the surface of the Earth is represented by <math>{\vec{F}_{g} = {mg}}</math> where ''g'' is the gravitation acceleration of Earth, -9.8 meters per second squared. | A mass ''m'''s weight near the surface of the Earth is represented by <math>{\vec{W} = \vec{F}_{g} = {mg}}</math> where ''g'' is the gravitation acceleration of Earth, -9.8 meters per second squared. | ||
<math>{\frac{d\vec{p}}{dt}}_{system} = \vec{F}_{net}</math> where '''p''' is the momentum of the system and '''F''' is the net force from the surroundings. | <math>{\frac{d\vec{p}}{dt}}_{system} = \vec{F}_{net}</math> where '''p''' is the momentum of the system and '''F''' is the net force from the surroundings. | ||
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===A Computational Model=== | ===A Computational Model=== | ||
A simple segment of code that calculates the both scalar and vector weight (gravitational force) exerted upon a ball. | |||
<iframe src="https://trinket.io/embed/glowscript/e47d83e127?start=result" width="100%" height="356" frameborder="0" marginwidth="0" marginheight="0" allowfullscreen></iframe> | |||
==Examples== | ==Examples== | ||
Revision as of 21:07, 30 November 2015
Claimed by mxu86 (Michael Xu)
A page about weight as a property of matter.
The Main Idea
In physics, weight describes the Gravitational Force upon a mass, usually relative to Earth or a planet. Depending on the source, weight may be defined as a scalar - the magnitude of the gravitational force on an object - or a vector equal to gravitational force. An object's weight is commonly confused with mass, but instead it is a force that depends on another body of matter, while mass is an intrinsic property of matter.
A Mathematical Model
A mass m's weight near the surface of the Earth is represented by [math]\displaystyle{ {\vec{W} = \vec{F}_{g} = {mg}} }[/math] where g is the gravitation acceleration of Earth, -9.8 meters per second squared.
[math]\displaystyle{ {\frac{d\vec{p}}{dt}}_{system} = \vec{F}_{net} }[/math] where p is the momentum of the system and F is the net force from the surroundings.
A Computational Model
A simple segment of code that calculates the both scalar and vector weight (gravitational force) exerted upon a ball.
<iframe src="https://trinket.io/embed/glowscript/e47d83e127?start=result" width="100%" height="356" frameborder="0" marginwidth="0" marginheight="0" allowfullscreen></iframe>
Examples
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