A metal block is resting on a rough wooden surface. A horizontal force applied to the block is increased uniformly. Which of the following curves correctly represents velocity of the block ?
Medium
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Block will start motion if
$\mathrm{kt} \geq \mu \mathrm{mg} \Rightarrow \mathrm{t} \geq \frac{\mu \mathrm{mg}}{\mathrm{k}}=\mathrm{t}_{0}$
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