Question

The gravitational field in a region is given by `E = (2 hati + 3 hatj) N//kg`.
Find the work done by the gravitiational filed when a particle of mass `1 kg` is moved on the line `3y+ 2X = 5` from `(1 m,1m)` to `(-2 m, 3m)`.

Answer 1

`F = mE = (2 hat I + 3 hat j) N//kg`
We can cheek that path given (therefore displacemental) is perpendicular to force.
`:. `W = 0`