10-1-08

As the bell wrung and all the students shuffled into the classroom eager to take a test the brilliant professor Mr. Manning told the class about the weird schedule the next day. The students are to report to their homeroom first and then proceed to class, except for juniors who go to room 127. He explained a worksheet that was handed out and told the juniors they would have time tomorrow and the seniors would have to do it at home. After that announcement he told the class to start by answering the daily question.

A.- The scale __reads__ half the weight it doesn't __weigh__ half of Burls weight.**
 * Q.- What is wrong with the statement: When Burl stands in the middle of the scaffolding how much does each scale weigh?

After the daily question Mr. Manning began to review the lab and post-lab that the classes had done the day before. He asked one of the students a question from the post-lab **If Burl is standing still in the middle of the scaffolding what is the net force?** The student was quite puzzled but with help from other students the answer popped up and the student said **the net force is 0.** One might ask, why would it be 0 net force? The answer to that question os because all of the forces are balanced. The weight force that is going down is balanced by the support force that is going up. A question came up about a question in the review packet handed out at the beginning of the unit. The question was asking about the difference if you pulled faster or slowly on a string with a ball in between two same length strings. If you pulled fast than the bottom string would break ball wants to stay at rest and the sudden force w

ouldn't move it. If you would pull slowly than the tension would build up and break the higher string. Finally, the moment came, Mr. Manning handed out the test. The students took the test with ease and handed it in.