could you pls give me an idea what to do in # 4.13...?? I'llbe the one to solve, what will I use?
Since you have a free body diagram in the picture, you should have an idea of where to start.
uhmmm, thats the problem..im really not that familiar with moments and stuff.. could you give me a hint???? plsssss...
OK, which forces are acting on the roller?
well what I did was this one[tex]\sum Fx= Pcos20-Nsin20-Fsin70=0[/tex]
[tex]\sum Fy=P sin20+Ncos20-Fcos70-120=0[/tex]
then, i dont know what to do...
If the x-axis is along the incline (which is visible from the FBD), the your equations are not correct.
so how do I make it right?
Well, since we're talking about equilibrium, sum up the forces in the x and y directions, and set them equal to zero.
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