MCQ
The speed of a particle of mass $m$ denoted by $\frac{ d ^2 x}{ dt ^2}+$ $\alpha x=0$. Its angular frequency will :
- ✓$\sqrt{\alpha}$
- B$\alpha$
- C$\frac{\alpha}{ m }$
- D$\frac{ m }{\sqrt{\alpha}}$
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$I.$ It will be easier to compress this rubber than expand it
$II.$ Rubber does not return to its original length after it is stretched
$III.$ The rubber band will get heated if it is stretched and released
Which of these can be deduced from the graph