①动滑轮重1N.,物重2N,拉力1N,绳子股数3,机械效率67%②动滑轮重1N,...①动滑轮重1N.,物重2N,拉力1N,绳子股数3,机械效率67%②动滑轮重1N,物重4N,拉力1.67N,绳子股数3,机械效率80%③动滑轮重2N物重
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![①动滑轮重1N.,物重2N,拉力1N,绳子股数3,机械效率67%②动滑轮重1N,...①动滑轮重1N.,物重2N,拉力1N,绳子股数3,机械效率67%②动滑轮重1N,物重4N,拉力1.67N,绳子股数3,机械效率80%③动滑轮重2N物重](/uploads/image/z/2017775-47-5.jpg?t=%E2%91%A0%E5%8A%A8%E6%BB%91%E8%BD%AE%E9%87%8D1N.%2C%E7%89%A9%E9%87%8D2N%2C%E6%8B%89%E5%8A%9B1N%2C%E7%BB%B3%E5%AD%90%E8%82%A1%E6%95%B03%2C%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%8767%EF%BC%85%E2%91%A1%E5%8A%A8%E6%BB%91%E8%BD%AE%E9%87%8D1N%2C...%E2%91%A0%E5%8A%A8%E6%BB%91%E8%BD%AE%E9%87%8D1N.%2C%E7%89%A9%E9%87%8D2N%2C%E6%8B%89%E5%8A%9B1N%2C%E7%BB%B3%E5%AD%90%E8%82%A1%E6%95%B03%2C%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%8767%EF%BC%85%E2%91%A1%E5%8A%A8%E6%BB%91%E8%BD%AE%E9%87%8D1N%2C%E7%89%A9%E9%87%8D4N%2C%E6%8B%89%E5%8A%9B1.67N%2C%E7%BB%B3%E5%AD%90%E8%82%A1%E6%95%B03%2C%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%8780%EF%BC%85%E2%91%A2%E5%8A%A8%E6%BB%91%E8%BD%AE%E9%87%8D2N%E7%89%A9%E9%87%8D)
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