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1. |
Condition for the stable equilibrium of a conservative force system in terms of potential energy U is |
A. | δU = 0 and δ2U = 0 |
B. | δU = 0 and δ2U > 0 |
C. | δU = 0 and δ2U < 0 |
D. | δU > 0 and δ2U = 0 |
Answer» C. δU = 0 and δ2U < 0 | |