Work Calculator (Force × Distance)
Works out the energy a force transfers.
Work done
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Force along the motion —
The formula
W = F × d × cos θ
Only the part of the force along the motion does work. Above 90° the work is negative, as with friction or braking.
What to watch out for
For a steady lift, the force is the weight, so W = mgh, which is the potential energy gained.
Frequently Asked Questions
How much work is pulling with 50 N for 10 m at 30°?
433 J, compared with 500 J for a straight pull.
Does holding something still count as work?
Not in physics. With no movement, no work is done on the object, tiring as it may be.