Question

Two frictionless inclined planes making an angle ${30}^o$ and ${60}^o$ 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?

• A. 4.9 $m{s}^{-2}$ in horizontal direction
• B. 9.8 $m{s}^{-2}$ in vertical direction
• C. zero
• D. 4.9 $m{s}^{-2}$ in vertical direction

Answer 1

The correct option is C zero

Vertical acceleration of A and B=g downward

Relative vertical acceleration =g-g=0