Physics-
General
Easy

Question

A 5.0 kg block is placed on top of a 10.0 kg block (see figure). A horizontal force of 45 N is applied to the 10 kg block, and the 5.0 kg block is tied to the wall. The coefficient of kinetic friction between the two blocks, and between the blocks and the floor, is 0.2.

  1. What is the acceleration of the 10 kg block?    
  2. What is the tension in the rope?    
  3. The lower block if pulled for 20 cm at which point the top block falls off. The lower block is then pulled another 20 cm. How much work did friction do over those 40 cm?    
  4. None    

The correct answer is: None

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