[问答题]
State the principle of 0-o lrd ud8q:bconservation of mechag1:sx (zj xzdwx9.8mrp2j 6qu nical energy for conservative forces. p( rjxz2s.x86dj u1qxmw: zg9
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.
