A block of mass \( 2 \mathrm{~kg} \) is pushed against a rough vertical wall with a force of \( ...

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A block of mass \( 2 \mathrm{~kg} \) is pushed against a rough vertical wall with a force of \( 30 \mathrm{~N} \), coefficient of static friction being \( 0.5 \). Another horizontal force of \( 15 \mathrm{~N} \) is applied on the block in a direction parallel to the wall. What is the acceleration of block (in \( \mathrm{m} / \mathrm{s}^{2} \) )?
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