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Question 2
a) w = UnderSquar( -a / x )
Undersquare يعني الجذر التربيعي
a is the acceleration
x is the position
w = 2 * pi * f Now find f
b) w = Undersquare( K / m )
K is the elastic constant
m is the mass and you have to find it here.
c) A or Xm is the amplitude use this equation to find it.
Xm = Undersquare [x^2 + (v/w)^2]