Conside the situation shown in figure. The block `B` moves on a frictionless surface ,while the coefficient of friction between `A` and the surface on which it moves is `0.2`. Find the acceleration with which the masses move and also the tension in the strings. `(Take g = 10 m//s^(2))`.

Conside the situation shown in figure. The block `B` moves on a fricti

1.	Conside the situation shown in figure. The block `B` moves on a frictionless surface ,while the coefficient of friction between `A` and the surface on which it moves is `0.2`. Find the acceleration with which the masses move and also the tension in the strings. `(Take g = 10 m//s^(2))`.
Answer» Let a be the acceleration with which the masses move and `T_(1)` and `T_(2)` be the tensions in left and right strings. Friction on mass `A` is `mumg =8N`. Then equationof motion `A,B` and `C` are For mass `A` `T_(1) -8 = 4a` …(i) For mass `B` `T_(2) = 8a` …(ii) For mass `C` `200-T_(1) -T_(2) = 20a` …(iii) Adding the above three equation, we get `32a =192` or `a = 6m//s^(2)` From Eqs,(i) and (ii), we have `T_(2) = 48N` and `T_(1) =32N`

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Conside the situation shown in figure. The block `B` moves on a frictionless surface ,while the coefficient of friction between `A` and the surface on which it moves is `0.2`. Find the acceleration with which the masses move and also the tension in the strings. `(Take g = 10 m//s^(2))`.

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