 
 
| Students | Jessica Chen | 
| School | HWDSB - Dalewood - Hamilton | 
| Level | Junior 7/8 - Grade 8 | 
| Group | Group 7 - Physics II | 
| Abstract | The purpose of my innovation is to understand why changing the surface of a dumbbell makes it easier to grip onto it while exercising. In other words, I am trying to understand how friction in an object can be changed; and to know more about the relationship between friction and dumbbells’ surface areas. |