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Q.

The gravitational field in a region is given by E=(2i^+3j^)N/kg.

Find the work done by the gravitational field when a particle of mass 1kg is moved on the line 3y+2x=5 from (1m,1m) to (-2m,3m).

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a

5

b

0

c

-5

d

13

answer is D.

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Detailed Solution

 F=mE=(2i^+3j^)N/kg

We can check that path given (therefore displacement) is perpendicular to force.

 W=0

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