# Two forces #F_1# and #F_2# are applied on a spool of mass M and moment of inertia I about an axis passing through its center of mass. Find the ratio #F_1/F_2#, so that the force of friction is zero. Given that #I<2MR^2#?

##### 1 Answer

Mar 13, 2018

See below.

#### Explanation:

Friction force

The movement equation regarding the spool center

then making