Answer
Similarly, at $x=0,$ we also have $P=0$
$$
P=F v=(k x) \sqrt{\frac{k}{m}\left(x_{i}^{2}-x^{2}\right)}
$$
$$
P=F v=(k \times 0) \sqrt{0} =0
$$
Work Step by Step
Similarly, at $x=0,$ we also have $P=0$
$$
P=F v=(k x) \sqrt{\frac{k}{m}\left(x_{i}^{2}-x^{2}\right)}
$$
$$
P=F v=(k \times 0) \sqrt{0} =0
$$
