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Created page with "==Key Stage 4== ===Meaning=== The '''centre of mass''' is the average position all the matter in an object. ===About Centre of Mass=== : The '''centr..."
==Key Stage 4==
===Meaning===
The '''centre of mass''' is the [[Mean Average|average]] position all the [[matter]] in an [[object]].
===About Centre of Mass===
: The '''centre of mass''' is also sometimes called the '''centre of gravity''' which is the point in an [[object]] where [[weight]] seems to act from.
: When calculating [[force]]s and drawing [[Free Body Diagram|free body diagram]]s [[object]]s can be [[model]]led as if they were a sphere at the '''centre of mass'''.
: The '''centre of mass''' of a [[lamina]] [[object]] can be found by hanging it from a point. The '''centre of mass''' will be directly below the point from which it is hung. Hanging it from a second point the '''centre of mass''' will also be below this new point. Those lines will cross over at the '''centre of mass'''.
===Method to find the Centre of Mass of a Lamina===
#Hang the [[lamina]] from a point.
#Hang a [[Plumb Line|plumb line]] from that point.
#Draw a line down the [[lamina]] following the string of the [[Plumb Line|plumb line]].
#Hang the [[lamina]] from a second point.
#Repeat steps 2 and 3.
The point where the lines cross will be the '''centre of mass'''.
===Meaning===
The '''centre of mass''' is the [[Mean Average|average]] position all the [[matter]] in an [[object]].
===About Centre of Mass===
: The '''centre of mass''' is also sometimes called the '''centre of gravity''' which is the point in an [[object]] where [[weight]] seems to act from.
: When calculating [[force]]s and drawing [[Free Body Diagram|free body diagram]]s [[object]]s can be [[model]]led as if they were a sphere at the '''centre of mass'''.
: The '''centre of mass''' of a [[lamina]] [[object]] can be found by hanging it from a point. The '''centre of mass''' will be directly below the point from which it is hung. Hanging it from a second point the '''centre of mass''' will also be below this new point. Those lines will cross over at the '''centre of mass'''.
===Method to find the Centre of Mass of a Lamina===
#Hang the [[lamina]] from a point.
#Hang a [[Plumb Line|plumb line]] from that point.
#Draw a line down the [[lamina]] following the string of the [[Plumb Line|plumb line]].
#Hang the [[lamina]] from a second point.
#Repeat steps 2 and 3.
The point where the lines cross will be the '''centre of mass'''.