A block of mass \( 10 \mathrm{~kg} \) is hold on a vertical wall of lift which is going upward w...

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A block of mass \( 10 \mathrm{~kg} \) is hold on a vertical wall of lift which is going upward with acceleration of 2
\( \mathrm{P} \) \( \mathrm{m} / \mathrm{s}^{2} \). Find minimum value of \( \mathrm{F} \) so that we can

W hold the block w.r.t. lift. Friction coffecient between block \& wall of lift is \( 0.5 \) :-
(1) \( 40 \mathrm{~N} \)
(2) \( 50 \mathrm{~N} \)
(3) \( 240 \mathrm{~N} \) (4) \( 60 \mathrm{~N} \)
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