- #1
rainstom07
- 16
- 0
In the figure http://i.imgur.com/LjFDg.gif, a wheel rolls horizontally without sliding while accelerating with linear acceleration [tex]\vec a_{com}[/tex]. A static frictional force [tex]\vec f_s[/tex] acts on the while at P, opposing its tendency to slide.
This is more of an coursework question.
When the textbook say "tendency to slide," what do they mean by that? Is it similar to driving up to 60 mph and then slamming on your brakes? If so, wouldn't the direction of the frictional force be in the opposite direction of the car?
Why is the static frictional force pointing in the direction of the acceleration of the center of mass, shouldn't it be the other way? If the figure is true,... then the wheel wants to slide backwards: sort of like moon walking?
This is more of an coursework question.
When the textbook say "tendency to slide," what do they mean by that? Is it similar to driving up to 60 mph and then slamming on your brakes? If so, wouldn't the direction of the frictional force be in the opposite direction of the car?
Why is the static frictional force pointing in the direction of the acceleration of the center of mass, shouldn't it be the other way? If the figure is true,... then the wheel wants to slide backwards: sort of like moon walking?