槓桿受力計算 槓桿原理?

2015-11-20 4:00 pm
若一臂長為6m桿重量為240kg,在4m處懸吊一點,此時臂桿向4m那側傾斜,請問2m那側需施若干kg的力,才可使此臂桿平行呢

回答 (1)

2015-11-20 9:45 pm
臂長: L = 6 m

懸吊: a = 4 m

桿重: w = 240 kg

重心: b = L/2 = 3 m


F*2 = 240*(a - b) = 240*1

F = 240/2 = 120 kg


收錄日期: 2021-04-30 19:56:09
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