define work write its unit
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Units. The SI unit of work is the joule (J), which is defined as thework expended by a force of one newton through a displacement of one metre.
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In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement).
Work
A baseball pitcher does positive work on the ball by applying a force to it over the distance it moves while in his grip.
Common symbols
WSI unitjoule (J)In SI base units1 kg⋅m2/s2
Derivations from
other quantities
W = F ⋅ s
W = τ θ
Work transfers energy from one place to another or one form to another.
The term work was introduced in 1826 by the French mathematician Gaspard-Gustave Coriolis[1][2] as "weight lifted through a height", which is based on the use of early steam engines to lift buckets of water out of flooded ore mines. The SI unit of work is the joule (J
Work
A baseball pitcher does positive work on the ball by applying a force to it over the distance it moves while in his grip.
Common symbols
WSI unitjoule (J)In SI base units1 kg⋅m2/s2
Derivations from
other quantities
W = F ⋅ s
W = τ θ
Work transfers energy from one place to another or one form to another.
The term work was introduced in 1826 by the French mathematician Gaspard-Gustave Coriolis[1][2] as "weight lifted through a height", which is based on the use of early steam engines to lift buckets of water out of flooded ore mines. The SI unit of work is the joule (J
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