Hi guys, Im not sure how to do q.8 in Misc. Ex4, p.60 in the OCR M1 book. I would really appreciate somebody telling me how to do the question. I do know how to resolve and have gotten all the other ones in the Misc Ex right , but the equations I end up with are:
1) 1800cos20 + 1650 cosx - F ( resistive force) = 0.6 a ( R (horizontally))
2) 39200N ( weight 4000X 9.8) = R + 1650sinx + 1800sin20 ( R ( vertically))
In order to find out x, I know that I need to use equation 2, but there are too many variables in eq.2 to find out x, because I need to include R ( normal contact force).
... and the ones that won't