What Forces Act on a Static Cylinder on an Inclined Plane?

[devious b]

Hi everyone,

If I have a static cylinder on an inclined rough plane at an angle alpha supported by a chord under tension, which leaves the surface of the cylinder at a tangent upwards and parallel to the plane. Does the weight component trying to pull it downwards equal the sum of the friction + tension? And does the friction oppose the translational motion, rotational, or both?


Any insights are appreciated, thx.

 

[CWatters]

Draw a force diagram. If the cylinder is not rotating what can you say about the forces/torques?

 

[tiny-tim]

hi devious b!

there's only three forces: the weight, the reaction force, and the tension

so they must all go through the same point

(because … ?)

 

[devious b]

My problem is the force diagram. Does the friction F act upward opposing the motion down and the torque caused by the tension?

 

[tiny-tim]

if you follow my hint, it'll automatically give you the answer to that