课程名称︰普通物理学甲上
课程性质︰工学院必修
课程教师︰傅昭铭
开课学院：理学院
开课系所︰物理系
考试日期（年月日）︰
考试时限（分钟）：120
试题 :
一、Multiple Choice(3 points/each) 30%
1. Which state is correct?
(1) The rate of change of the linear momentum of a particle is equal to the net
force acting on the particle.
(2) Newton's Second Law can be used to relate the momentum of a particle to
the resultant force acting on it.
(3) The impulse of the force F acting on a particle equals the change in the
momentum of the particle, this is called Impulse-Momentum Theorem.
(4) Newton called the product mv the"quantity of motion" of the particle.
2. A system of particles is known to have a total kinetic energy of zero. Then
, the momentum of the system is zero. If a system of particles is known to ha-
ve a total momentum of zero, does it necessarily follow that the total kinetic
energy of the system is also zero?
(1) yes (2) no Why:
3. You are holding a spinning bicycle wheel while standing on a stationary
turntable. If you suddenly flip the wheel over so that it is spinning in the
opposite direction, the turntable will
(1) remain stationary.
(2) start to spin in the same direction as before flipping.
(3) start to spin in the same direction as after flipping.
4. Two spheres have the same radius and equal masses. One is made of solid al-
uminum, and the other is made from a hollow shell of gold. Which one has the
bigger moment of inertia about an axis through its center?
(a) soild aluminum
(b) hollow
(c) same
Why:
5. Which state is correct?
(1) Bulk Modulus measures the resistance of a solid to a change in its length.
(2) Sheer Modulus measures the resistance to motion of the planes within a
solid parallel to each other.
(3) The tensile strain is the ratio of the external force to the cross-sectio-
nal area.
(4) Tge tension stress is the ratio of the change in length to the original le
-ngth.
(5) Young's modulus is the ratio of (tension stress)/(tensile strain)
6. You are sitting on a swing. A friend gives you a push, and you start swinn-
ing with period T_1. Supposed you were standing on the swing rather than sitt-
ing. When given the same push, you start swinning with period T_2. Which of
the following is true?
(1) T_1 = T_2 (2) T_1 > T_2 (3) T_1 < T_2
7. Weighted hand in equilibrium condition as the right figure. How much force
does the Biceps make?
(1) 30.0 (2) 50.0 (3) 500 (4) 300 N
（反正就是手臂拿一颗球）
│\ mg = 50N
│ \ d = 3cm
│ \