[单选题]
A 0.300-kg mass, attusjta9 nw1f;7 hfcqkqy49 3t6 ached to the endsevz*r id4 f7/ of a 0.750-m string, is whirled around in a smooth level table. If the maximum tension that the string can withstand 7 rsze4idf/ v*is 250 N, then what maximum linear speed can the mass have if the string is not to break?
Post time 2024-1-22 02:51:16