Two fixed frictionless

Question:

Two fixed frictionless inclined planes making an angle $30^{\circ}$ and $60^{\circ}$ with the vertical are shown in the figure. Two blocks $A$ and $B$ are placed on the two planes. What is the relative vertical acceleration of A with respect to $B$ ?

  1. $4.9 \mathrm{~ms}^{-2}$ in vertical direction.

  2. $4.9 \mathrm{~ms}^{-2}$ in horizontal direction

  3. $9.8 \mathrm{~ms}^{-2}$ in vertical direction

  4. Zero


Correct Option: 1

Solution:

 

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