A vertical rectangular gate 3.5 m wide and 5 m high contains water on one side to a depth of 2.4 m and oil (specific gravity = 0.9) to a depth of 1.5 m on  or side. 

A frustum-shaped body is rotating at a constant angular speed of 200 rad/s in a container filled with SAE oil at 20°C (-0.1 Pa.s) as shown in figure below. If the thickness of the oil film on all sides is 1.2 mm, determine the power required to maintain its motion. Also determine the reduction in the required power input when the oil temperature rises to 80°C ( mue =0.0078 Pa.s).

A vertical rectangular gate 3.5 m wide and 5 m high contains water on one side to a depth of 2.4 m and oil (specific gravity = 0.9) to a depth of 1.5 m on  or side. 

With reference to UN’s sustainable development goals, which of the following is SDG 10?