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Two blocks A and B are connected to each other by a string and a spring of force constant k, as shown in the figure. The string passes over a frictionless pulley as shown. Block B slides over the horizontal top surface of a stationary block C and block A slides along the vertical side of C both with the same uniform speed. The coefficient of friction between the surfaces of the blocks B and C is μ
If the mass of block A is m, what is the mass of block B? .
  • a)
  • b)
  • c)
  • d)
    μ m
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Two blocks A and B are connected to each other by a string and a sprin...
Since the blocks slide at the same uniform speed, no net force acts on them.
If M is the mass of block B, then the tension in the string is T = μ Mg.
Also T = mg. Equating the two, we get μ M = m or  
which is choice (2).
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Two blocks A and B are connected to each other by a string and a spring of force constant k, as shown in the figure. The string passes over a frictionless pulley as shown. Block B slides over the horizontal top surface of a stationary block C and block A slides along the vertical side of C both with the same uniform speed. The coefficient of friction between the surfaces of the blocks B and C isμIf the mass of block A is m, what is the mass of block B? .a)b)c)d)μ mCorrect answer is option 'B'. Can you explain this answer?
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