Identify the correct statements for an SHM          (i) Displacement leads velocity by 0.5π          (ii) Displacement lags velocity by π          (iii) Acceleration leads velocity by 0.5π          (iv) Acceleration lags velocity by 0.5π

InSHM, displacement y=Asin wt  differentiate with respect to time t  Velocity,v= Awcoswt=A wsin (ωt+π2),  differentiate with respect to time t again and acceleration,a=–Aw2sin wt=Aw2sin(wt+π ) Velocity leads displacement by 0.5 π, acceleration leads velocity by 0.5 π.