A block of mass \( m \) is kept on a incline with variable angle of incliantion \( \theta . \the...

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A block of mass \( m \) is kept on a incline with variable angle of incliantion \( \theta . \theta \) is slowly
\( P \) increased by use of motor from \( 0^{\circ} \), if \( \mu_{\mathrm{k}}=1 / 2 \) and

W \( \mu_{s}=3 / 4 \). Angle \( \theta \& \) minimum acceleration of block once it starts slipping
(1) \( 53^{\circ}, 2 \mathrm{~m} / \mathrm{s}^{2} \)
(2) \( 37^{\circ}, 2 \mathrm{~m} / \mathrm{s}^{2} \)
(3) \( 53^{\circ}, 4 \mathrm{~m} / \mathrm{s}^{2} \)
(4) \( 37^{\circ}, 4 \mathrm{~m} / \mathrm{s}^{2} \)
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