有一劲度系数为k的轻弹簧,原长为l0,将它吊在天花板上.当它下端挂一托盘平衡时,其长度变为l1.然后在托盘中放一重物,弹簧长度变为l2,则由l1伸长至l2的过程中,弹性力所作的功为
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B:https://bgk-photo.cdn.bcebos.com/b58f8c5494eef01f36a354baf0fe9925bc317d1d.jpg
C:span
D:https://bgk-photo.cdn.bcebos.com/e1fe9925bc315c60262227909db1cb134954771d.jpg
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F:https://bgk-photo.cdn.bcebos.com/a8773912b31bb051797aff57267adab44aede077.jpgG、spanH、https://bgk-photo.cdn.bcebos.com/8718367adab44aeda810f29ba31c8701a18bfb77.jpg
发布时间:2024-04-18 14:24:28