Two masses A and B of $$10$$ kg and $$5$$ kg respectively, are connected with a string passing over a frictionless pulley fixed at the corner of a table as shown in fig. the coefficient of friction of A with the table is $$0.2$$. the minimum mass of C that may be placed on A to prevent it from moving is

Question

Infinity Learn · Accepted Answer

Since the given system is in equilibrium therefore tension in the string is $$5$$ g.When we consider the combination of A and C, thenT $$=$$ μRor T $$=$$ $$0.2$$[$$10+mass$$ of C]gor  $$5g$$ $$=$$ $$0.2$$[$$10+mass$$ of C]gor mass of C $$=$$ $$15$$ kg

Two masses A and B of 10 kg and 5 kg respectively, are connected with a string passing over a frictionless pulley fixed at the corner of a table as shown in fig. the coefficient of friction of A with the table is 0.2. the minimum mass of C that may be placed on A to prevent it from moving is

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