[问答题]
State the principle of conservation of mechanical energy for coi8btfu lkk byi630 2+rnservative fougc:a0h h5yju, cy99 trces9 a9y5 huh:0cyct ,ugj.
参考答案: If only conservative forces are acting, the total mechanical energy of a system neither increases nor decreases in any process. It stays constantπit is conserved.
