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Two blocks of masses 'm' and and 'M' are...

Two blocks of masses 'm' and and 'M' are arranged as shown in the The coefficient of friction between the two blocks is `'mu'`, where as between the lower block and the horizontal surface is zero. Find the force 'F' to be applied on the upper block for the system to be under equilibrium ? .

Text Solution

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One the upper block
`F =T +f = T + mu N, F = T + mu mg……(1)`
One the lower block `T =mu mg……(2)`
from (1) and (2) we get, `F =2 mu mg`
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