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QJEEM23Ph1b6b: JEE Main 2023 Physics - Class 11 JEEM23Ph1b6b Solution: An object of mass 8 kg is hanging from one end of a uniform rod …

An object of mass 8 kg is hanging from one end of a uniform rod CD of mass 2 kg and length 1 m pivoted at its end C on a vertical wall as shown in figure. It is supported by a cable AB such that the system is in equilibrium. The tension in the cable is (Take g = 10 m/s 2^2 )

JEE Main 2023 (Online) 25th January Morning Shift Physics - Rotational Motion Question 49 English

Multiple Choice Options

  • A 90 N
  • B 240 N
  • C 30 N
  • D 300 N

Step-by-Step Verified Solution

JEE Main 2023 (Online) 25th January Morning Shift Physics - Rotational Motion Question 49 English Explanation

Torque balance about ' OO '

T2×0.6=20×0.5+80×1\frac{T}{2} \times 0.6=20 \times 0.5+80 \times 1

T×0.3=10+80=90T \times 0.3=10+80=90

T=9003=300 NT=\frac{900}{3}=300 \mathrm{~N}

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