Question

Define work done. How is work measured? When is the force applied, negative?​

Answer 1

Answer:

Work = Force×Displacement×Cos θ where, θ is the angle between directions of force and displacement. The SI unit of work is joules (J). Work done is said to be negative, if the displacement of the given object occurs in the opposite direction (180°) of the applied force....

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Answer 2

Answer:

*Any activity can generally be called as work.

But in physics work is said to be done by the force when the force applied on the body displaces it.

*It's measured in Joules.

*When there's a component in opposite direction.