The spool is placed on rough horizontal surface and has inner radii r and outer radii R.The angle theta between the applied force and the horizontal can be varied.The critical angle theta for which the spool does not roll and remain stationary is given by

Question

samigupta8 · Answer

@irishboy123

samigupta8 · Answer

@Michele_laino

irishboy123 · Answer

soz sami

struggling to guess what this might look like

samigupta8 · Answer

Actually the force is exerted on the inner circle of radii r( given in itz diagram)..
And i don't think that it's actually a circle bt in the diagram it's like that..
So sorry if it is wrong..

samigupta8 · Answer

@vincent-lyon.fr

michele_laino · Answer

at which point the external force is applied?

samigupta8 · Answer

At a point on the inner disc making an angle theta with horizontal..

samigupta8 · Answer

Sir it"zz a spool..!

michele_laino · Answer

like this:
|dw:1458418761972:dw|

samigupta8 · Answer

Yeah...actually on the right handside point of that inner disc

samigupta8 · Answer

But i think it will also do the same work..

michele_laino · Answer

ok! like this one:
|dw:1458418920091:dw|

samigupta8 · Answer

Force in i+j on the right hand side..
Lol

michele_laino · Answer

|dw:1458419053482:dw|