Answer:
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A weightlifter pulls on a 225 kg bar with 1600 N of force, but the bar does not move. How much work is performed?
1 answer:
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Answer:
c)by a factor of four
Explanation:
The total energy of a simple harmonic oscillator is given by
where
k is the spring constant of the oscillator
A is the amplitude of the motion
In this problem, the amplitude of the oscillator is doubled, so
A' = 2A
Therefore, the new total energy is
So, the total energy increases by a factor 4.