Difference between revisions of "Moment"
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: When a [[force]] acts on an [[object]] with a [[pivot]] it becomes a turning force called a [[moment]]. | : When a [[force]] acts on an [[object]] with a [[pivot]] it becomes a turning force called a [[moment]]. | ||
: A '''moment''' can be calculated by multiplying a [[force]] by the [[distance]] from a [[pivot]]. | : A '''moment''' can be calculated by multiplying a [[force]] by the [[distance]] from a [[pivot]]. | ||
| + | : '''Moment'''s can be used to make [[Force Multiplier]]s using a [[pivot]] and [[lever]]. | ||
| + | : The longer the lever, the larger the [[moment]] that can be produced. | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:PivotLever.png|center|400px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |Using '''moments''' an effort can be used to lift a load. If the [[pivot]] is closer to the load than the effort then the [[force]] of effort can be smaller than the load to lift the object. | ||
| + | |} | ||
===Equation=== | ===Equation=== | ||
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===Example Calculations=== | ===Example Calculations=== | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:MomentSpanner1.png|center|200px]] | ||
| + | |[[File:MomentSpanner2.png|center|200px]] | ||
| + | |[[File:MomentSpanner3.png|center|200px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |Text | ||
| + | | style="height:20px; width:200px; text-align:center;" |Text | ||
| + | | style="height:20px; width:200px; text-align:center;" |Text | ||
| + | |- | ||
| + | |[[File:MomentHammer1.png|center|200px]] | ||
| + | |[[File:MomentHammer2.png|center|200px]] | ||
| + | |[[File:MomentHammer3.png|center|200px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |Text | ||
| + | | style="height:20px; width:200px; text-align:center;" |Text | ||
| + | | style="height:20px; width:200px; text-align:center;" |Text | ||
| + | |} | ||
Revision as of 09:18, 14 October 2018
Key Stage 3
Meaning
A moment is the turning effect of a force.
About Moments
- When a force acts on an object with a pivot it becomes a turning force called a moment.
- A moment can be calculated by multiplying a force by the distance from a pivot.
- Moments can be used to make Force Multipliers using a pivot and lever.
- The longer the lever, the larger the moment that can be produced.
 |
| Using moments an effort can be used to lift a load. If the pivot is closer to the load than the effort then the force of effort can be smaller than the load to lift the object. |
Equation
Moment = Force x Perpendicular distance from the pivot.
\[M = F \times d\] Where:
- M = Moment
- F = Force
- d = Perpendicular distance from the pivot.
Example Calculations
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