Answer:
The work done on the particle is 6 J
Explanation:
The work done on the particle is equal to:
[tex]W=\int\limits^3_1 {Fx} \, dx =\int\limits^3_1 {\frac{a}{x^{2} } } \, dx =a\int\limits^3_1 {\frac{dx}{x^{2} } } \, \\W=9(\frac{-1}{x} )_{1}^{3} =-9(\frac{1}{3} -1)=6J[/tex]