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  4. A block of mass 5 kg resting on a horizontal surface is connected by a cord, passing over a light frictionless pulley to a hanging block of mass 5 kg. The coefficient of kinetic friction between the block and the surface is 0.5. Tension in the cord is: (g = 9.8 m/sec2)

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Q. A block of mass $5 \,kg$ resting on a horizontal surface is connected by a cord, passing over a light frictionless pulley to a hanging block of mass $5\, kg$. The coefficient of kinetic friction between the block and the surface is $0.5.$ Tension in the cord is : $(g = 9.8 \,m/sec^2)$Physics Question Image

VITEEEVITEEE 2019

Solution:

For block A,
$T=\mu N=5a$ $N=5g$
For block B,
$5g-T=5a$
$\Rightarrow T = 36.75N, a = 2.45\, m/sec^{2}$

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