Two masses `A` and `B` of mass `15kg` and `6kg` are connected by a string passing over a friction pulley fixed at the corner of a table as shown in The coefficient of friction between `A` and table is `0.3` the minimum mass (in kg) of that must be placed on `A` to prevent it from moving is .

Two masses `A` and `B` of mass `15kg` and `6kg` are connected by a str

1.	Two masses `A` and `B` of mass `15kg` and `6kg` are connected by a string passing over a friction pulley fixed at the corner of a table as shown in The coefficient of friction between `A` and table is `0.3` the minimum mass (in kg) of that must be placed on `A` to prevent it from moving is .
Answer» Correct Answer - `5` Here, mass of `A =15kg` mass of `B =6kg` mass of `C = m kg= ?` To prevent the motion weight of B = force of friction between table and blocks `A` and `C` `6 g = mu (R) g = 0.3 (15 + m)g` `15 + m = (6)/(0.3) = 20` `m = 20 - 15 =5 kg` .

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Two masses `A` and `B` of mass `15kg` and `6kg` are connected by a string passing over a friction pulley fixed at the corner of a table as shown in The coefficient of friction between `A` and table is `0.3` the minimum mass (in kg) of that must be placed on `A` to prevent it from moving is .

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