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Concepts Of Physics MCQ Edition [Volume 1]PhysicsFriction

Consider the arrangement depicted in the figure. Determine the tension in the string attached to the 0.50 kg block. (Assume g = 10 m/s ^2 )

Options

  1. A4.8 N
  2. B5.2 N
  3. C4.6 N
  4. D5.0 N

Correct answer

A. 4.8 N

Step-by-step solution

The maximum frictional force acting on the two blocks on the horizontal surface is given by: f = m₁ g + m₂ g Substituting the given values: f = 0.2 1.0 10 + 0.2 1.0 10 = 2 + 2 = 4 N The driving force due to the hanging block is: W = m₃ g = 0.5 10 = 5 N Since the driving force is greater than the total frictional force ( 5 N > 4 N ), the system will accelerate. Let a be the common acceleration of the system. The net force on the system is: F_ net = W - f = 5 - 4 = 1 N The total mass of the system is: M = 1.0 + 1.0 +

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