A heavy box of mass $50 \mathrm{~kg}$ is moving on a horizontal surface. If co-efficient of kinetic friction between the box and horizontal surface is $0.3$ then force of kinetic friction is :
JEE MAIN 2024, Difficult
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$\mathrm{F}_{\mathrm{L}}=\mu_{\mathrm{L}} \mathrm{N}=0.3 \times 50 \times 9.8=147 \mathrm{~N}$
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