Mechanics - Cylinders, springs and rough inclined plane

[cupid.callin]

Homework Statement

Why there won't be any friction?

 

[tiny-tim]

hi cupid.callin!

Why there won't be any friction?

hint: take moments about the centre of the cylinder

 

[schaefera]

Friction is a reaction force, if the spring is there then there would be no need for it (possibly?)

 

[cupid.callin]

hi cupid.callin!


hint: take moments about the centre of the cylinder

i just need to know why solution says there will be no friction

 

[cupid.callin]

Friction is a reaction force, if the spring is there then there would be no need for it (possibly?)

shouldn't there be both friction and spring force and friction?

 

[tiny-tim]

i just need to know why solution says there will be no friction

yes, take moments about the centre of the cylinder, and you'll find out!