Frequently Asked Questions
What is the work formula?
W = F · d · cos(θ). Work equals force times distance times the cosine of the angle between them.
Why does angle matter?
Only the component of force along the motion does work. Perpendicular forces (cos 90° = 0) do no work.
What is the unit?
Joules (J), where 1 J = 1 N·m. Lifting 1 kg by 1 m against gravity is about 9.81 J of work.
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