engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Engineering Mechanics Equilibrium and Friction
Condition for the stable equilibrium of a conservative force system in terms of potential energy U is
1
δU = 0 and δ2U = 0
2
δU = 0 and δ2U > 0
3
δU = 0 and δ2U < 0
4
δU > 0 and δ2U = 0