Question

A small block of wood of specific gravity 0.5 is submerged at a depth of 1.2 m in a vessel filled with water. The vessel accelerated upward with an acceleration of a = g/2. Time taken by block to reach the surface is (g = 10 m/s²) -

• A. (a) 0.6 sec
• A. (b) 0.4 sec
• A. (c) 1.2 sec
• A. (d) 1 sec

Answer 1

(c)

Acceleration w.r.t vessel is a = $\left( \frac{1 - S}{S} \right)$ (g + a).