On a rough surface, Daniel pushes a carton with a mass of 30.0kg. The force F that is he applies is 608N with an angle of 55.0 degrees with the horizontal. In a time of 4s, the block's speed increases from 0.15m/s to 2.68m/s. a) Draw a free body diagram for your calculations b) Find the coefficient of kinetic friction between the flood and the block.

The laminar flow takes place between closely spaced parallel plates as shown in figure below. u > V y Ľ The velocity profile is given by u = v. The gap height h is 5 mm and the space is filled with oil (specific gravity = 0.86, viscosity μ = 2 x 10-4 N-s/m²). The bottom plate is stationary and the top plate moves with a steady velocity of v= 5cm/s. The area of the plate is 0.25 m². The rate of rotation of a fluid particles is given by

3 m water 8 m Pconerete= 2200kgm* wwww 6 m The dam shown in the figure is built of concrete having a density of 2200 kg/ m3 and rests on a solid foundation. Determine the minimum coefficient of friction between the dam and the foundation required to keep the dam from sliding at a water depth of 6.8 m. Assume that the dam is 100 m into the page. Your Answer:

Water flows into a conical vessel at a constant rate of Q cm³/s. The vessel has a height of 18 cm and a diameter of 10 cm at the top. When the water is 12 cm deep, the water level is rising at the rate of 0.115 cm/s. Find the value of Q.