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`        A massless spring of length l and spring constant k is placed vertically on a table. A all of mass m is just kept on top of the spring. What is the maximum velocity of the ball?`
3 months ago

Arun
22034 Points
```							Equation of motion for the ball at the moment when the spring is compressed by Δx,ma = mg - kΔx As long as the acceleration of the ball is positive, its velocity increases. At the moment, when the acceleration vanishes, the velocity of the ball attains the maximum value.The spring is then compressed by an amount Δl given by mg - kΔl = 0Δl = mg/k So when ball attains the maximum velocity,its height from the table h = l - mg/k
```
3 months ago
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• Previous Year Exam Questions