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Spring Force

From the give...

Question

From the given system, just after cutting the string connecting $m_{4}$ and ground, (here $(m_{1} + m_{2}) > (m_{3} + m_{4})$ )

Acceleration of

m_{3}

is upwards

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Acceleration of

m_{1}

is zero

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Acceleration of

m_{2}

is downwards

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Acceleration of

m_{3}

is zero

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Solution

The correct option is D Acceleration of $m_{3}$ is zero
After cutting the string, force on $m_{4}$ changes, so it accelerates upwards. However, the springs are still expanded, so the tension in the springs remain the same. Therefore, at that instant, the blocks $m_{1}, m_{2}$ and $m_{3}$ are still at rest.

Suggest Corrections

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