重要提醒：您最近的登录行为可能存在异常，查看详情。建议您立即修改密码。 | 关闭

　　Moving Moment of particles of momentum moment of Theorem

　　Xia Hong et al: Particle System Moving Moment of momentum moment = 0 this Theorem 1.2.3,True Religion, there are two possibilities: one is moving moment center 0 is uniform linear motion of the origin of the coordinate system, and thus the relative momentum of particles of momentum theorem in the inertial coordinate system can be maintained (1) in the form of the same, the other is moving moment center 0 is fixed point of zero instantaneous acceleration. This fixed point in general difficult to find, so little practical significance. 2 examples Example 1 Figure 3 shows the winch in the same moment the active couple on an inclined plane under the action of homogeneous cylinder drag. Winch as a hollow cylinder, radius r, mass m; cylinder of pure rolling, foot radius, mass m; sloped surfaces. Demand pull and the cable and the slope of the friction cylinder. Solutions (1) the amount of exercise taken by the power equation of the overall demand for the study. Analysis of force,ghd, shown in Figure 3. Analysis of movement, the winch fixed axis rotation, the cylinder plane. Obviously there are n =, mz = kinetic energy of particles: = {m. r2m. 2 +1- ({m:): 2 +1 m (threat) external power: Σ = as l-m2】 sinO power equation: = Σ for solving the above equation was acceleration 2 (M-m2grsnO) can winch body 2 Figure 3 (M-m2grsinOJ0 \theorem, a J. = FR = Kwame love friction calculated relative instantaneous center axis according to the angular momentum theorem, took a calculated tightrope = F a mgRsin8 Rally Fr = ≠ rm1 + jm 々 Example 2 are shown in Figure 4 length of rod B quality, on the vertical plane, the rod against a smooth vertical side walls A, B on the other side of the floor smooth and level, and with the horizontal. angle. Since then, that rod from stationary state down. seek bar when the angular acceleration at any position and angular velocity. SOLUTIONS bar are as study object,ghd hair straighteners, force, shown in Figure 4. Analysis of Movement: Rod are for planar motion, P is instantaneous, and the surface ; 1, the rigid body rotation around the instantaneous center of the differential equations for the transient.: - {c. s which,: + m (): {Figure 4 plane motion of the straight bar Chih Shandong Institute of Engineering Solutions in 2001 was = c. s re- Points may √ 32z,. roar of a sin) [1] Research Group of Theoretical Mechanics Harbin Institute of Technology Theoretical Mechanics compiled Beijing: Higher Education Press, 1997 [2] Fan Chin Shan Theoretical Mechanics,ghd hair straightener, Beijing: Higher Education Press,ghd hair straightener, l999AIIjMomentumTheoremofthePartideSystemtotheMovi ngMomentCenterX / aHongWangYanxi ~ YangAllanXuYingzi (Sh ~ dongIp.st ~ tuteofTechnology, Zibo255012, China) AbstractInthispaper, therelative-an out momcnhlmtheoremoftheparticlesystemstothemovingmOlT lenturnoenterisproved. severalsirI1pIeequationsofspecialmovingpolntsarean alyzed, madtheiractuallyapplicationsareexplainedbyexamples Keywordsmovingpoim, mo ~ ngmomentcenter, angularmomentum, inertiaforce, theorem 0 join the thousands of \process, I have been network TV \Internet information services. Where do not agree, please vote it the other s c publications journal content includes royalties paid by Internet service pay, no extra \Full publication produced within the customer in accordance with the unified format, readers can browse contents of this online searching, and magazine subscriptions. \

　　More articles related to topics：

　　ghd hair straightener Air circulating pump variable flow con

　　MAC Cosmetics Cheap Space Arc Cam Computer-aided machining p

　　ghd hair straightener Heating to achieve thermal c