In a simple harmonic motion, when the displacement is one-half

In a simple harmonic motion, when the displacement is one-half the amplitude, what fraction of the total energy is kinetic?

Total energy of particle executing S.H.M. of amplitude (A).

E =	1	mω² A²
	2

K.E.of the particle =	1	mω²		A² -	A²			when x =	A
	2				4				2

=	1	mω² ×	3	A² =	1	×	3	mω² A²
	2		4		2		4

Clearly ,	KE	=	3
	Total energy		4