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Concepts Of Physics MCQ Edition [Volume 1]PhysicsNewton's Laws of Motion

A body of weight w₁ is hung from the ceiling of a room via a chain of weight w₂ . The ceiling pulls the chain with a force equal to

Options

  1. Aw₁ + w₂ 2
  2. Bw₂
  3. Cw₁ + w₂
  4. Dw₁

Correct answer

C. w₁ + w₂

Step-by-step solution

Consider the body and the chain as a single system. The total downward force acting on this system is the sum of their weights, which is w₁ + w₂ . Since the system is in equilibrium, the upward force exerted by the ceiling must balance the total downward force. Therefore, the ceiling pulls the chain with an upward force equal to w₁ + w₂ . Alternatively, considering the free body diagram of the chain, the downward forces acting on it are its own weight w₂ and the downward pull from the body w₁ . Let the upward force

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