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QJEEM19Ph80b9: JEE Main 2019 Physics - Class 11 JEEM19Ph80b9 Solution: Two blocks A and B of masses m A = 1 kg and m B = 3 kg are kept …

Two blocks A and B of masses mA = 1 kg and mB = 3 kg are kept on the table as shown in figure. The coefficient of friction between A and B is 0.2 and between B and the surface of the table is also 0.2. The maximum force F that can be applied on B horizontally, so that the block A does not slide over the block B is :
[Take g = 10 m/s2] JEE Main 2019 (Online) 10th April Evening Slot Physics - Laws of Motion Question 99 English

Multiple Choice Options

  • A 8 N
  • B 16 N
  • C 40 N
  • D 12 N

Step-by-Step Verified Solution

MA = 1 kg, MB = 3 k

μAB=0.2{\mu _{AB}} = 0.2

μB=0.2{\mu _B} = 0.2

Fmax = (MA + MB) × 0.2 × 10 + (MA + MB) × 0.2 × 10

= 4 × 2 + 4 × 2 = 16

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