Investigating motors

Today's class investigation led us to discover how the following affect the performance of a motor:

• number of batteries used
• the way the batteries are connected (series vs. parallel)
• winding the string around the pulley vs. the nail

Although some groups may have had some difficulties with the equipment you should have found that batteries in a series worked more effectively than in a parallel. Also the string around the nail worked the best. Use this to complete the #1 A-D on pg 67 for homework.