I.4.39 Curvilinear Integrals

Condition: Find the work of force \ (\ vec {f} = x \ vec {\ iMath} -y \ vec {\ jmath} \ quad \) when moving the material point along the curve \ (\ gamma: y = 2 \ squrt {x} \) from the point \ (M (1.2) \) to the point of the point \ (N (0.0) \). Find the length of the path.