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NTA Abhyas JEE Main2020PhysicsLaws of MotionPractice

The masses M 1 , M 2 and M 3 are 5 , 2 and 3 kg respectively. These have been joined using massless, inextensible pieces of strings as shown in the figure. If the whole system is going upward with an acceleration of 2 m s - 2 , then the value of tensions T 1 , T 2 and T 3 respectively are [take g = 9 . 8 m s - 2 ]

Options

  1. A29.4 N, 98 N, 98 N
  2. B98 N, 49 N, 29.4 N
  3. C118 N, 59 N, 35.4 N
  4. D35.4 N, 118 N, 59 N

Correct answer

C. 118 N, 59 N, 35.4 N

Step-by-step solution

Given T 1 = M 1 + M 2 + M 3 ( g + a ) = 5 + 2 + 3 9.8 + 2 = 118 N T 2 = M 2 + M 3 g + a = 2 + 3 9.8 + 2 = 59 N T 3 = M 3 g + a = 3 ( 9.8 +2 ) = 35.4 N

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