Disk moment of inertia example.

[tysonk]

A disk, cylinder shaped, of mass m and radius r is initially motionless on an ice rink. It has a massless string wound around it which you pull with a constant force F. After your hand has moved a distance d.

How far has the c.m. of the disk moved? If someone could show me how I could do this problem it would be appreciated.

 

[tysonk]

To add further I was able to solve this, but without getting rid of the parameter t. Still looking for some help...

x = (F/m)t^2/2

 

[Doc Al]

Hint: Compare the acceleration of the center of mass with the acceleration of a point at the top of the disk.