如图所示,质量是m=2kg的物体在倾角为θ=37°的光滑斜面上,受一沿斜面向上的拉力F=18N的作用,从静止开始运动,已知sin37°=0.6,cos37°=0.8,g取10m/s^2,求:(1)2s内物体的位移多大?(2)外力F在作用10s
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![如图所示,质量是m=2kg的物体在倾角为θ=37°的光滑斜面上,受一沿斜面向上的拉力F=18N的作用,从静止开始运动,已知sin37°=0.6,cos37°=0.8,g取10m/s^2,求:(1)2s内物体的位移多大?(2)外力F在作用10s](/uploads/image/z/3727615-31-5.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E8%B4%A8%E9%87%8F%E6%98%AFm%3D2kg%E7%9A%84%E7%89%A9%E4%BD%93%E5%9C%A8%E5%80%BE%E8%A7%92%E4%B8%BA%CE%B8%3D37%C2%B0%E7%9A%84%E5%85%89%E6%BB%91%E6%96%9C%E9%9D%A2%E4%B8%8A%2C%E5%8F%97%E4%B8%80%E6%B2%BF%E6%96%9C%E9%9D%A2%E5%90%91%E4%B8%8A%E7%9A%84%E6%8B%89%E5%8A%9BF%3D18N%E7%9A%84%E4%BD%9C%E7%94%A8%2C%E4%BB%8E%E9%9D%99%E6%AD%A2%E5%BC%80%E5%A7%8B%E8%BF%90%E5%8A%A8%2C%E5%B7%B2%E7%9F%A5sin37%C2%B0%3D0.6%2Ccos37%C2%B0%3D0.8%2Cg%E5%8F%9610m%2Fs%5E2%2C%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%892s%E5%86%85%E7%89%A9%E4%BD%93%E7%9A%84%E4%BD%8D%E7%A7%BB%E5%A4%9A%E5%A4%A7%3F%EF%BC%882%EF%BC%89%E5%A4%96%E5%8A%9BF%E5%9C%A8%E4%BD%9C%E7%94%A810s)
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