[領域] 大一普物 (題目相關領域)
[來源] 課本 (課本習題、考古題、參考書...)
[題目] An object of mass m is traveling on a horizontal surface. There is a
coefficient of kinetic friction 摩差係數b between the object and the surface. The
object has speed v when it reaches x=0 and encounters a spring. The object
compresses the spring, stops, and then recoils and travels in the opposite
direction. When the object reaches x=0 on its return trip, it stops.
Find k in terms of b mg v
[瓶頸] (寫寫自己的想法，方便大家為你解答)
我列式出來是 1/2*mv^2=bmgd+1/2*kd^2(設d為壓縮距離)但我解不出來....有2ㄍ未知數
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.131.142.201