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===About Weight===
: Weight is a [[force]] so it is [[Measure|measured]] in [[Newton]]s.
: Weight is a [[Non-contact Force|non-contact force]] because an [[object]] does not need to be touching the ground to be [[attract]]ed to the [[Earth]].
: Weight always acts downwards.
: All [[object]]s on [[Earth]] have [[weight]] because the [[Earth]] has a [[Gravitational Field|gravitational field]].
: Different [[planet]]s have a different strength [[Gravitational Field|gravitational field]], so the same [[object]] might '''weigh''' a different amount on different [[planet]]s.
: On [[Earth]] the [[Gravitational Field Strength|gravitational field strength]] is roughly 10[[N/kg]]
===Examples===
{| class="wikitable"
: m = Mass
: g = Gravitational Field Strength
===Example Calculations===
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |'''Calculate the [[weight]] of a 25[[kg]] object on [[Earth]].'''
| style="height:20px; width:200px; text-align:center;" |'''A 550[[kg]] space probe is sent into deep space beyond the gravitational field of any other [[object]]. Calculate the weight of the space probe.'''
| style="height:20px; width:200px; text-align:center;" |'''[[The Moon]] has a [[Gravitational Field Strength|gravitational field strength]] of 1.6[[N/kg]]. Calculate the weight of a 85[[kg]] astronaut on [[The Moon]].
|-
| style="height:20px; width:200px; text-align:left;" |
m = 25[[kg]]
g<sub>Earth</sub> = 10[[N/kg]]
<math>W = m \times g </math>
<math>W = 25 \times 10 </math>
<math>W = 250N </math>
| style="height:20px; width:200px; text-align:left;" |
m = 550[[kg]]
g<sub>Deep Space</sub> = 0[[N/kg]]
<math>W = m \times g </math>
<math>W = 550 \times 0 </math>
<math>W = 0N </math>
| style="height:20px; width:200px; text-align:left;" |
m = 85[[kg]]
g<sub>The Moon</sub> = 1.6[[N/kg]]
<math>W = m \times g </math>
<math>W = 85 \times 1.6 </math>
<math>W = 136N </math>
|}