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The gravitational field in a region due ...

The gravitational field in a region due to a certain mass distribution is given by `vec(E)=(4hati-3hatj)N//kg`. The work done by the field in moving a particle of mass `2kg` from `(2m,1m)` to `(2/3m,2m)` along the line `3x+4y=10` is

A

`-25/3 N`

B

`-50/3 N`

C

`25/3N`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
`W=m(vec(E).vec(dr))=m(vec(E).(vec(r)_(2)-vec(r)_(1)))`
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