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JEE Main202430 Jan 2024Morning ShiftPhysicsLaws of MotionActual

All surfaces shown in figure are assumed to be frictionless and the pulleys and the string are light. The acceleration of the block of mass 2 kg is:

Options

  1. Ag
  2. Bg 3
  3. Cg 2
  4. Dg 4

Correct answer

B. g 3

Step-by-step solution

For 4 kg block: 40 - 2 T = 4 a ⇒ T = 20 - 2 a For 2 kg block: T - 10 = 4 a ⇒ 20 - 2 a - 10 = 4 a ⇒ 10 = 6 a ⇒ a = 10 6 = g 6 m s - 2 Acceleration of the block of mass 2 kg , 2 a = g 3 m s - 2 .

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