College Physics答案2023

第八章测试

1.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: B: C: D:
答案:B
2.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: B: C: D: 3.A particle of mass rotates with an angular speed ，and a distance to the rotational axis. Which of the following equations are correct. （ ）
A:linear speed of the particle B:angular momentum of the particle C:kinetic energy of the particle D:radial acceleration 4.Which of the following statements about rotational inertia are correct.（ ）
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 rotational inertia can be different for different axis D:The object with larger mass must have larger rotational inertia 5.The torque on particle is due to the net force on that particle, including both internal and external forces. （ ）
A:对 B:错