The gravitational field in a region is given by g =5n/kgi+12n/kgj.g=5n/kgi^+12n/kgj.^ the change in the gravitational potential energy of a particle of mass 2kg2kg when it is taken from the origin to a point (7m,-3m)is: a 71j71j b 1358j1358j c 71j71j correct answer
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