第八章单元测试
- A uniform disk of mass M and radius R, what is the rotational inertial as the axis perpendicular to the disk and passing through its edge.（ ）
- A uniform rod of mass M and length L rotates with an angular speed
. If the axis passing through its one end, what is the angular momentum.（ ） - A particle of mass
rotates with an angular speed 
，and a distance 
to the rotational axis. Which of the following equations are correct. （ ） - Which of the following statements about rotational inertia are correct.（ ）
- The torque on particle is due to the net force on that particle, including both internal and external forces. （ ）
A:
B:
C:
D:
答案:
A:
B:
C:
D:
A:angular momentum of the particle
B:kinetic energy of the particle 
C:linear speed of the particle 
D:radial acceleration 
A:The minimum rotational inertia appears as the axis through the center of mass B:The parallel axis theorem can be used to calculate rotational inertia C:The object with larger mass must have larger rotational inertia D:The rotational inertia can be different for different axis
A:错 B:对
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