Questions focused on calculating gravitational potential energy change or work done by gravity in contexts such as falling objects, water flow, or interconnected vessels.
A body of mass 50 kg is lifted to a height of 20 m from the ground in the two different ways as shown in the figures. The ratio of work done against the gravity in both the respective cases, will be: Case 1: Vertically upward Case 2: Along the ramp (1) $1:2$ (2) $\sqrt{3}:2$ (3) $2:1$ (4) $1:1$