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Physics

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A 4 kg block resting on a horizontal surface is attached to an 8 kg block that hangs freely by a cord passing over a frictionless pulley. The coefficient of kinetic friction between the block and the horizontal surface is 0.4. Find the acceleration of the blocks and the tension in the cord.

The pulling force is 8g. The retarding force is 4g*.4

Net force = total mass*acceleration where the net force is the pulling force minus the retarding force.

  • Physics - ,

    Can the answer be 10?

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