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Question

A car C of mass m1 rests on plank P of mass m2. The plank rests on a smooth floor. The spring and pulley are ideal. The car starts and moves towards the pulley with acceleration
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A
If m1>m2, the string will remain under tension.
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B
If m1<m2, the string will remain under slack.
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C
If m1=m2, the string will have no tension, and C and P will have accelerations of equal magnitude.
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D
All of these
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Solution

The correct option is D All of these
The car starts and moves towards the pulley with acceleration are All of these correct statements.
Hence,
Option D is correct.

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