共查询到19条相似文献,搜索用时 109 毫秒
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扭摆法是测量物体转动惯量的有效方法,其不确定度分析是关键.本文推导了扭摆法测物体转动惯量准确的不确定度传递公式,得到各直接测量量及其不确定度对转动惯量不确定度的影响.并进行了算例分析.结果表明,扭摆法比三线摆测得物体的转动惯量的误差以及不确定度要小很多.这对实验方法的选择和仪器的研制具有重要的实际意义. 相似文献
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改进和研制了几种演示刚体平面平行运动(滚动)的物理实验仪,突出演示了转动惯量、滚动半径、刚体质量等因素对运动的影响.仪器结构简单,构思巧妙,演示效果良好. 相似文献
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质量均匀分布的物体相对质心轴的转动惯量,通常是由它的几何量表示,这称为转动惯量的几何表示.如果给定物体的顶点坐标,它相对任意轴的转动惯量可以由这些顶点坐标表示,这称为转动惯量的代数表示.由转动惯量的平行轴定理,得到杆和三角形板相对任意转轴转动惯量的代数表示.作为简单应用,得到三角形边框相对质心轴转动惯量的几何量表示. 相似文献
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Six superdeformed bands of odd-odd nucleus 194Tl in A~190 mass region are studied using the particle-number conserving method for treating the cranked shell model with pairing interactions. Calculated results agree with experiments very well. Based on our calculation the configurations of the six superdeformed bands are assigned and the influence of blocking effects of proton and neutron on moments of inertia is investigated in detail. The variation of moments of inertia with rotational frequency is mainly attributed to the intruder shells (neutron N=7 and proton N=6), whereas the contributions to moment of inertia from other shells remain almost unchanged with rotational frequency. 相似文献
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椭圆环形刚体转动惯量的数值计算 总被引:1,自引:0,他引:1
用Matlab编程对椭圆环形刚体的转动惯量进行了数值计算,并拟合出了椭圆环形刚体转动惯量的多项式表示式,从而可快速计算出椭圆环形刚体的转动惯量. 相似文献
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The influence of the nonrigidity of free complex asymmetric top molecules on the anisotropy of the absorption cross section
over various rotational configurations has been studied under conditions where the total angular momentum is conserved. It
is shown that the nonrigidity-induced cross section anisotropy is maximal for the optical transition with the dipole moment
collinear to the axis of the molecule’s mean moment of inertia and rapidly decreases with the rise of the intramolecular flexibility.
For all types of tops, disturbances from internal motions are stronger in the region where the principal axes of inertia are
collinear with the total rotational angular momentum. 相似文献
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运用均质三角形薄板对任一边、对过顶点且与对边平行的轴的转动惯量公式,得到了用薄板的质量、边长及对角线长表示的均质多边形薄板对任一对角线的转动惯量. 相似文献
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It is known that the flying characteristics of the golf ball is influenced by flying speed, rotational frequencies and the dimples, etc. In this study, the drag and lift acting on the test balls are measured using a three components loadcell by changing Reynolds number and the spin rate ratio, the number and the depth of dimples. And the flow around the balls is visualized by applying the oil film method and PIV in the stationary state. From these results, the aerodynamic drag and lift coefficients of the balls in the stationary and the rotational state are made clear. 相似文献