A block of mass \( 1 \mathrm{~kg} \) sits on an incline as shown in figure. (i) What must be the...

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A block of mass \( 1 \mathrm{~kg} \) sits on an incline as shown in figure.
(i) What must be the frictional force between block and incline if the block is not to slide along the incline when the incline is accelerating to the right at \( 3 \mathrm{~m} / \mathrm{s}^{2} \) ?
(ii) What is the least value \( \mu_{s} \) can have for this to happen?
(a) \( 3.48,0.8 \)
(b) \( 3.48,0.36 \)
(c) \( 0.36,3.48 \)
(d) \( 0.36,0.8 \)
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