Section: Solid Mechanics | Marks: 2
The rigid links PQ and PR of length $L$ each are connected to 3 sliders P, Q and R, by pin-joints as shown in the figure. The sliders, Q, and R, slide in the $y$-direction while the slider, P, slides in the $x$-direction. When the slider, P, is at the position $x = 40\text{ mm}$, its velocity is $30\text{ mm/s}$ along the positive $x$-direction. At that instant, the velocity of slider, Q, will be ($L = 50\text{ mm}$)

- A. $40\text{ mm/s}$ along the positive $y$-direction
- B. $40\text{ mm/s}$ along the negative $y$-direction
- C. $22.5\text{ mm/s}$ along the positive $y$-direction
- D. $22.5\text{ mm/s}$ along the negative $y$-direction