W= -mg sinθ e_{r} - mg cosθ eθ. N= -|N| e_{r} F=ma= m(-R dotθ^{2} e_{r }+ R doubledotθ eθ) resolving in e_{r}-direction, -mRdotθ^{2} = -|N|-mg sinθ mRdotθ^{2} = |N|+ mg sinθ am i right doing this?
Last edited by noobpronoobpro; Apr 23rd 2017 at 11:21 AM.
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correct ... net radial force would be the sum of the normal reaction force and the radial component of weight.