Two blocks are connected by a string as shown below. The smooth inclined surface makes an angle of 42o with the horizontal, and the block on the incline has a mass of 6.7 kg.
  1. Find the mass of the hanging block that will cause the system to be in equilibrium.
  2. Find the tension in the string.
  3. Now replace the hanging block with another hanging block of mass 5.0 kg. Find the direction and magnitude of its acceleration.

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