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plz help, homework trouble, springs and ocilatory motion!
The position of a an air-track cart that is oscillating on a spring is given by (16.5cm)cos[(15.0s-1)t].
At what value t after t=0 is the cart first located at x=4.6 cm?
x=Acos[(angular freqency)(t)+(phase constant)] i think is the only one but i dont get the question right, maybe its my math.
@=phase constant, w= angular frequency
comparing x= 4.6cm=(16.5cm)cos[(15.0s-1)t] to:
X=Acos[[email protected]]
inserting the information we get
0.046m=0.165m*cos1.5(t)
0.278=cos1.5t
t=0.278s
but incorrect.
Homework Statement
The position of a an air-track cart that is oscillating on a spring is given by (16.5cm)cos[(15.0s-1)t].
At what value t after t=0 is the cart first located at x=4.6 cm?
Homework Equations
x=Acos[(angular freqency)(t)+(phase constant)] i think is the only one but i dont get the question right, maybe its my math.
The Attempt at a Solution
@=phase constant, w= angular frequency
comparing x= 4.6cm=(16.5cm)cos[(15.0s-1)t] to:
X=Acos[[email protected]]
inserting the information we get
0.046m=0.165m*cos1.5(t)
0.278=cos1.5t
t=0.278s
but incorrect.