Which statement describes absolute and apparent brightness?
2 answers:
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The spring constant is
Explanation:
For an object in a simple harmonic motion, the acceleration of the object is related to the displacement by
where
a is the acceleration
is the angular frequency
x is the displacement
The angular frequency is defined as
where
k is the spring constant
m is the mass
Substituting the second equation into the first one, we get
In this problem we have
m = 1 g = 0.001 kg
And at t=0,
x = 43.75 cm
a = -1.754 cm/s
Therefore, we can re-arrange the equation above to find the spring constant:
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Answer:
1.5min
Explanation:
To solve the problem it is necessary to take into account the concepts related to Period and Centripetal Acceleration.
By definition centripetal acceleration is given by
Where,
V = Tangencial velocity
r = radius
With our values we know that
Therefore solving to find V, we have:
For definition we know that the Time to complete are revolution is given by