- #1
flipjack
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undamped spring system, need urgent help
hey guys, got my maths exam tomorrow and this question seems to be confusing me, i think they made a mistake, but I am not sure, if anyone could show me how to do this question or what answer they found it would be greatly appreciated
question:A mass-spring system consists of a unit mass (that is m = 1kg) and a spring with
stiffness constant k = 9. A forced oscillation of this system without damping is
given by x'' + 16x = sin(2t)
where x(t) is the position of the mass at the time t. If the initial position of the
mass is x(0) = 0 and the initial velocity of it is x'(0) = 2, find the position x(t) of
this initial value problem
Their solution:
x(t) = (11/24)sin(4t)+(1/12)cos(2t)
my answer was colossal compared to theirs
hey guys, got my maths exam tomorrow and this question seems to be confusing me, i think they made a mistake, but I am not sure, if anyone could show me how to do this question or what answer they found it would be greatly appreciated
question:A mass-spring system consists of a unit mass (that is m = 1kg) and a spring with
stiffness constant k = 9. A forced oscillation of this system without damping is
given by x'' + 16x = sin(2t)
where x(t) is the position of the mass at the time t. If the initial position of the
mass is x(0) = 0 and the initial velocity of it is x'(0) = 2, find the position x(t) of
this initial value problem
Their solution:
x(t) = (11/24)sin(4t)+(1/12)cos(2t)
my answer was colossal compared to theirs