discussion_problems9

discussion_problems9 - DISCUSSION PROBLEM [9.1]: answer ......

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Unformatted text preview: DISCUSSION PROBLEM [9.1]: answer ... During a re-wind tape is “pulled” from one reel to the DISCUSSION PROBLEM [9.1]: other ... ω Take-up spool (driven) vt “Free” spool R As tape collects on the left reel, which is driven by a motor, the radius R increases; since v t = Rω , then so does the linear speed of the tape from right to left. During “play” a different drive arrangement is used ... When you rewind an audio or video tape why does it because you can’t have the speed of the tape change wind up fastest when it has almost completed its task, during “play”! i.e., when the take-up spool is almost full? Two wheels “pull” the tape past the playback head at a constant speed. 1 ...
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