Physics-
General
Easy

Question

In the following problems, indicate the correct direction of friction force acting on the cylinder, which is pulled on a rough surface by a constant force F A spool is pulled vertically by a constant force F (< Mg) as shown in figure The friction force can be given by which of the following diagrams

  1.    
  2.    
  3.    
  4. cannot be interpreted    

The correct answer is:

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