句型转换。

1. Mr. Smith often flies to Tokyo for the meeting. (同义句转换)

    Mr. Smith often _____ a _____ to Tokyo for the meeting.

2. His factory is 10 miles from his home. (对画线部分提问)

    _____ is his factory from his home?

3. My mother usually takes the bus to work. (变否定句)

    My mother _____ _____ _____ the bus to work.

4. I usually spend 3 hours doing my homework. (同义句转换)

   It usually _____ me 3 hours _____ _____ my homework.

5. He goes to school by No.103 Bus. (同义句转换)

   _____  the No.103 Bus to school.

如图所示，质量为m₂的物体2放在车厢地板上．用竖直细绳通过定滑轮与质量为m₁的物体1连接．不计滑轮摩擦，当车厢水平向右加速运动时，物体2仍在车厢地板上相对静止．连接物体1的绳子与竖直方向夹角为α．物体2与车厢地板的摩擦系数为μ．则物体2受绳的拉力为______，物体2所受地板的摩擦力为______．