how do you define joule as the SI unit of energy?
UnknownDude:
1 joule is the amount of energy required to displace a body by 1 m using a force of 1 N
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Hey mate here is your answer...
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We know from the work-energy theorem, that:
[math]\Delta E = W[/math]
(Change in energy equals to work)
We know that work is defined as “force multiplied by displacement”. So we can substitute this into the equation.
[math]\Delta E = \vec{F} \cdot \vec{d}[/math]
(Change in energy equals to force times displacement)
This is the tricky part. When we equate two expressions, we are saying that they share the same dimensions (same units). The SI unit for force is Newtons, and the SI unit for displacement is Meters. Therefore, the unit of energy and work is Newton-meters. We define 1 Newton-meter as 1 joule. This is how the unit of energy is derived...
TS Zayer.
☆☆☆☆☆☆☆☆☆☆☆☆☆☆
♡♡♡♡♡♡♡♡♡♡♡♡♡♡
We know from the work-energy theorem, that:
[math]\Delta E = W[/math]
(Change in energy equals to work)
We know that work is defined as “force multiplied by displacement”. So we can substitute this into the equation.
[math]\Delta E = \vec{F} \cdot \vec{d}[/math]
(Change in energy equals to force times displacement)
This is the tricky part. When we equate two expressions, we are saying that they share the same dimensions (same units). The SI unit for force is Newtons, and the SI unit for displacement is Meters. Therefore, the unit of energy and work is Newton-meters. We define 1 Newton-meter as 1 joule. This is how the unit of energy is derived...
TS Zayer.
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the amount of energy required when a force of 1 Newton is applied on a body so that it moves a distance of 1 metre is equal to 1 joule
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