A mass on a spring is in SHM If the system has half the maximum velocity what fraction of the amplitude is it currently displaced to Give your answer as a decimal number to 3 sf
The velocity of an object in SHM is given by the equation:
v = Aω cos(ωt)
where v is the velocity, A is the amplitude, ω is the angular frequency, and t is the time.
If the system has half the maximum velocity, then v = (1/2) vmax. Substituting this into the equation above, we get:
(1/2) vmax = Aω cos(ωt)
Since we know that vmax = Aω, we can simplify this equation to:
cos(ωt) = 1/2
This means that the displacement of the mass on the spring is currently at a point where the cosine function has a value of 1/2. This occurs at an angle of 60 degrees (or π/3 radians) from the equilibrium position.
Using the equation for the displacement of an object in SHM, we can find the amplitude:
x = A cos(ωt)
When cos(ωt) = 1/2, we have:
x = A cos(π/3) = (1/2)A
Therefore, the mass on the spring is currently displaced to half of the amplitude, or 0.500 times the amplitude.
Answer: 0.50
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