[問題] 大一物理 請教一下
[領域] (題目相關領域)
物理
[來源] (課本習題、考古題、參考書...)
課本習題
[題目]
<6.80>A physics professor is pushed up a ramp inclined upward at 30.0度
above the horizontal as he sits in his desk chair that slides on
frictionless rollers.the combined mass of the professor and chair is
85.0kg.he is pushed 2.50m along the incline by a group of students who
together exert a constant horizontal force of 600N.the professor’s
speed at the bottom of the ramp is 2.00m/s.
Use the work-energy theorem to find his speed at the top of the ramp
[瓶頸] (寫寫自己的想法，方便大家為你解答)
我的想法是 1/2M(V1)^2+學生作的公=1/2M(V2)^2+MGH
不太董題目的意思.... 到底是怎麼推的...
用沿著斜面推 怎麼算起來 會無解= =(是我笨嗎...)
沿著水平推 數字有醜 課本後面應該會有解答的阿= =
謝謝了!
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