A) \[(20\,y/z)\,i+(20x/z)\,j+(20\,xy/{{z}^{2}})\,k\]
B) \[-(20\,y/z)\,i-(20x/z)\,j+(20\,xy/{{z}^{2}})\,k\]
C) \[-(20\,y/z)\,i+(20x/z)\,j-(20\,xy/{{z}^{2}})\,k\]
D) \[(20\,y/z)\,i+(20x/z)\,j-(20\,xy/{{z}^{2}})\,k\]
Correct Answer: D
Solution :
Potential energy \[U=20xy/z\] \[F=\frac{dU}{dx}=\frac{d{{U}_{x}}}{dx}+\frac{d{{U}_{y}}}{dy}+\frac{d{{U}_{z}}}{dz}\] \[=\frac{20y}{z}\,i+\frac{20x}{z}j-\frac{20xy}{{{z}^{2}}}k\]You need to login to perform this action.
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