A particle moves on the x axis according to the equation x=x₀sin²(wt). The motion is simple harmonic

(1) with amplitude x₀

(2) with amplitude 2x₀

(3) with time period 2pi/w

(4) with time period pi/w

Please help

A particle on a speing executes shm when the particle is found at x=xmax/2 the speed of the partcle is 

A)vx=vmax 

B)vx=√3vmax/2

C)vx=√2vmax/2

D)vx=vmax/2

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What is mean by motion and time define it's all types with there parts and their s.i. units.

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