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elizabethann2
23.02.2021 •
Physics
Which of the following topics would be most appropriate in a group in a college setting? Group of answer choices A. coping with a mental illness B. coping with unemployment C. coping with children D. determining sexual identity E. coping with relationships
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Ответ:
The position of stable equilibrium is -a
And the period of small oscillations must be: c/(ma^3)
Explanation:
Since the potential is:
We first look for a position of stable equilibrium. This posiiton must satisfy two considtions, that the first derivative of the potential must vanish at this point and the second derivative must be positive.
Which vanish for
x = a ; x =-a
The second derivative of V(x) is:
And:
Therefore:
a)
The position of stable equilibrium is -a
And the period of small oscillations must be:
(c/(ma^3))^1/2
b)
Let's find the maximum amplitude if the particle starts at this point with velocity v
If this is the case, the total energy will be:
(mv^2)/2
And the maximum amplitude will be
x = a^3/c mv^2 = (m v^2 a^3)/ c