Two blocks $A$ and $B$,each of the same mass,are attached by a thin inextensible string through an ideal pulley. Initially,block $B$ is held in position as shown in the figure. Now,block $B$ is released. Block $A$ will slide to the right and hit the pulley in time $t_A$. Block $B$ will swing and hit the surface in time $t_B$. Assume the surface is frictionless. [Hint: Tension $T$ in the string acting on both blocks is the same in magnitude. Acceleration needed for horizontal motion is provided by $T$.]

  • A
    $t_A = t_B$
  • B
    $t_A < t_B$
  • C
    $t_A > t_B$
  • D
    Data are not sufficient to determine the relationship between $t_A$ and $t_B$.

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