What is the acceleration of the block and the trolley system as in figure, if the coefficient of...

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What is the acceleration of the block and the trolley system as in figure, if the coefficient of kinetic friction between the trolley and the surface is \( 0.04 \) ? What is the tension \( T \) in the string? (Take, \( g=10 \mathrm{~ms}^{-2} \), neglect the mass of the string)
(a) \( a=0.96 \mathrm{~ms}^{-2}, T=50 \mathrm{~N} \)
(b) \( a=0.42 \mathrm{~ms}^{-2}, T=27.1 \mathrm{~N} \)
(c) \( a=0.96 \mathrm{~ms}^{-2}, T=27.1 \mathrm{~N} \)
(d) \( a=0.42 \mathrm{~ms}^{-2}, T=42.6 \mathrm{~N} \)
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