Question

help me to solve this please


please dont post irrelevant answers​

Answer 1

here is your answer

hope it helps you

Answer 2

K.E.=P.E.v

=>½mw²(a²-x²)=½mw²x²

=>a²-x²=x²

=>2x²=a²

=>x=a/√2

so option 2 is the answer