中国大学MOOC: 一个作定轴转动的轮子，对轴的转动惯量http://img1.ph.126.net/D_UBwVwPlSke3-yuHQTneg==/6608273790145671142.png，正以角速度http://img0.ph.126.net/K1cRCbGhIogrQy1SLuqwVw==/4846717624081233546.png匀速转动。现对轮子加一恒定的力矩 http://img2.ph.126.net/KmCm7lvNDAR3Edu6UUP9-w==/131730289201069115.png，经过8秒，轮子的角速度为http://img1.ph.126.net/_ZJ0tiaDXT_jOGL9fn7Ykg==/6597952674496267114.png，则http://img0.ph.126.net/K1cRCbGhIogrQy1SLuqwVw==/4846717624081233546.png = http://img1.ph.126.net/8IUVyeO6Cw8H4_qBJs8XRA==/6631686790745100463.png
举一反三
- <img src="http://img1.ph.126.net/JMg9tqo6gf8sEot0y9NSUg==/6619559177490984445.gif" />? 0|<img src="http://img1.ph.126.net/uSXYTJKY1--cmM46BmL7Pg==/1177972777551495010.gif" />|<img src="http://img0.ph.126.net/-vDBDVZEQJqbFun7PrX7vg==/2887370311115280318.gif" />|<img src="http://img2.ph.126.net/NK1mnxUZa_ibCGqQvHOaoQ==/2435884448470832003.gif" />
- 图所示机构的自由度是（ ）。[img=374x158]18034e4940516e4.png[/img] A: n=7, PL=9, Ph=1, F=2 B: n=8, PL=10, Ph=1, F=3 C: n=8, PL=11, Ph=1, F=1 D: n=7, PL=10, Ph=0， F=1
- <img src="http://img0.ph.126.net/q6tqn77YyTg_j7CabeHYJw==/3109735542717391842.jpg" />? <img src="http://img1.ph.126.net/QO3FWMGgxAVtN31l0ulKFw==/6619487709235793443.jpg" />|<img src="http://img2.ph.126.net/-x9WCwFJKaqmfOJLJjH0_Q==/6630623563001319953.jpg" />|<img src="http://img1.ph.126.net/5eiGUQZYA2gEX9q4m57n4Q==/6608642126539334311.jpg" />|<img src="http://img1.ph.126.net/YixVkAU6iexb7xitW-q8Lg==/6630125484233816848.jpg" />
- 图所示机构的自由度是（ ）。[img=225x225]18034e49029b42b.jpg[/img] A: n=7, PL=10, Ph=0, F=1 B: n=9, PL=12, Ph=2, F=1 C: n=8, PL=11, Ph=1, F=1 D: n=8, PL=11, Ph=0, F=2
- <img src="http://img1.ph.126.net/xRWXQUfZJwmSXkQiZ0l2HQ==/3826089358528721080.jpg" />? <img src="http://img2.ph.126.net/QX-jBzzFTrwpTjQkcBtfcg==/2449958197307439176.jpg" />|<img src="http://img0.ph.126.net/3XApesgU0Iga8L5Tkm0YXg==/6630324495838409649.jpg" />|<img src="http://img2.ph.126.net/sPsiWYSStdIbrCUcsMBK9A==/3114802092298176869.jpg" />|<img src="http://img1.ph.126.net/y-FdOVmaocQvOIOXtXTxEw==/662592095194801258.jpg" />