Below is a diagram of a weight on a spring. When the weight is pulled down and then released, the spring compresses and expands.
Each position indicates a different point in time.
Which of the following statements is true?
a
In all four positions, mechanical energy is 0 J.
b
The elastic potential energy of the spring at Position 2 is converted to kinetic energy.
c
The chemical potential energy of the spring is greatest at Position 4.
d
In all four positions, the gravitational potential energy of the spring is the same.
Which of the following statements is true?
a
In all four positions, mechanical energy is 0 J.
b
The elastic potential energy of the spring at Position 2 is converted to kinetic energy.
c
The chemical potential energy of the spring is greatest at Position 4.
d
In all four positions, the gravitational potential energy of the spring is the same.
1 answer:
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Answer:
Option B
Change in entropy of the process is
Explanation:
The entropy of a system is a measure of the degree of disorderliness of the system.
The entropy of a system moving from process 1 to 2 is given as
recall from first law,
hence we have,
since the process is isothermal,
this gives us
integrating within the limits of 1 and 2, will give us
also from ideal gas laws,
hence we have
This makes the correct option B