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滑轮及其应用

参赛作者:林晓杰

作品分类:初中-初中物理

浏览次数:173

所属学校:福建省厦门第六...

评论次数:0

作品简介:
本节课选自沪科版八年级物理第十章第2节,本节内容是在学习了杠杆、力臂、杠杆的平衡条件等知识的基础上学习滑轮的知识。其中学生对生活中的滑轮并不陌生,但对其特点和实质并不知晓。滑轮的实质是学习的难点。
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	at javax.servlet.ServletRequestWrapper.isAsyncStarted(ServletRequestWrapper.java:380)
	at javax.servlet.ServletRequestWrapper.isAsyncStarted(ServletRequestWrapper.java:380)
	at org.apache.catalina.core.ApplicationDispatcher.unwrapRequest(ApplicationDispatcher.java:738)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:428)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:360)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:297)
	at net.paoding.rose.web.portal.impl.WindowTask.run(WindowTask.java:81)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)