J's answer to Yong Xin Yu's Junior College 1 H2 Maths Singapore question.

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J
J's answer
8 answers (A Helpful Person)
1st
I used resolution of forces, where the normal contact force balances out the weight (so the bead doesn’t move up or down) and provided the centripetal force for the bead to remain in motion. Let me know if I am wrong.