※ [本文转录自 NTU-Exam 看板] 作者: jimian (ian) 看板: NTU-Exam 标题: [试题] 96上 黄辉理 普通物理甲 期中考 时间: Thu Nov 15 16:53:10 2007 课程名称︰普通物理学甲 课程性质︰必修 课程教师︰黄辉理 开课学院：生农学院 开课系所︰生物机电系 考试日期（年月日）︰2007.11.14 考试时限（分钟）：120分钟左右 是否需发放奖励金：是(Thanks!!) （如未明确表示，则不予发放） 试题 : 1.The cylinder show in the figure is held in position by a rope that supplies for a force F and by static friction. What is the minimum value of μs such that the cylinder will remain in equilibrium when F is at the angle θ with the horizontal? 2.A vehicle, mass m, is propelled in a straight horizontal line by an engine delivering a constant power P. If the vehicle starts from rest, how long does it travel in a time t? 3.Four bricks of length L, identical and uniform, are stacked on top of one another in such way that part of each extends beyond the one beneath. Find, in terms of L, the maximum values of (a)a1,(b)a2,(c)a3,(d)a4,(e)h, such that the stack is in equilibrium. 4.Calculate the rotational inertia of an annular cylinder of mass M with inner radius R1 and outer radius R2. 5.Suppose a solid disk of radius R is given an angular velocity ω0 and about an axis through its center and is then lowered to a rough, horizontal surface and released. Assume that the coefficient of the friction between the disk and the surface is μ. (a)How much time does it take for pure rolling motion to occur? (b)What is the distance the disk travels before pure rolling occurs? --

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