A) 71 J
B) \[13\sqrt{58}\]J
C) \[-71\]J
D) 1 J
Correct Answer: D
Solution :
[d] Gravitational field, \[I=(5\hat{i}+12\hat{j})\,\,N/g\] \[I=-\frac{dv}{dr}\] \[v=-\left[ \int\limits_{0}^{x}{{{I}_{x}}dx+\int\limits_{0}^{y}{{{I}_{y}}dy}} \right]\] \[=-\,[{{I}_{x}}\cdot x+{{I}_{y}}\cdot y]\] \[=-\,[5(7-0)+12(-\,3-0)]\] \[=-\,[35+(-\,36)]=1\,J/kg\] i.e., change in gravitational potential 1 J/kg Hence change in gravitational potential energy 1JYou need to login to perform this action.
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