Physics-
General
Easy

Question

In the figure, the blocks have unequal masses m subscript 1 end subscript and m subscript 2 end subscript open parentheses m subscript 1 end subscript greater than m subscript 2 end subscript close parentheses. m subscript 1 end subscript has a downward acceleration a. The pulley P has a radius r, and some mass. The string does not slip on the pulley–

  1. The two sections of the string have unequal tensions.    
  2. The two blocks have accelerations of equal magnitude.    
  3. The angular acceleration of P is fraction numerator a over denominator r end fraction    
  4. a less than open parentheses fraction numerator m subscript 1 end subscript minus m subscript 2 end subscript over denominator m subscript 1 end subscript plus m subscript 2 end subscript end fraction close parentheses g    

The correct answer is: a less than open parentheses fraction numerator m subscript 1 end subscript minus m subscript 2 end subscript over denominator m subscript 1 end subscript plus m subscript 2 end subscript end fraction close parentheses g

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