presents one method for modeling this problem. The construction of a flat rectangular roof (4.09 m × 7.90 m) allows it to withstand a maximum net outward force of of 3.90 × 104 N. The density of the air is 1.29 kg/m3. At what wind speed will this roof blow outward
presents one method for modeling this problem. The construction of a flat rectangular roof (4.09 m...
A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr.What is the pressure difference? Use 1.28 kg/m^3 for the density of air.How much force is exerted on the roof?If the roof cannot withstand this much force, will it "blow in" or "blow out"?Help?
A hurricane wind blows across a 8.00m×16.0m flat roof at a speed of 140 km/h . Part A: Is the air pressure above the roof higher or lower than the pressure inside the house? Pick one. Explain. The pressure above the roof is lower due to the lower velocity of the air. The pressure above the roof is lower due to the higher velocity of the air. The pressure above the roof is higher due to the lower velocity of...
A hurricane wind blows across a 7.50 m × 18.7 mflat roof at a speed of 170 km/hr . A) Is the air pressure above the roof higher or lower than the pressure inside the house? B) What is the pressure difference? C) How much force is exerted on the roof? D) If the roof cannot withstand this much force, will it “blow in” or “blow out”?
Question 8 A 240-km/h wind blowing over the flat roof of a building causes the roof to lift off the building. If the house is 11 m × 7 m in size, estimate the mass of the roof in kg. Assume the roof is not nailed down. The density of air is 1.29 kg/m Selected Answer: Correct Answer: 220,990 22,524 ± 5% Monday, November 27,2017 9:11:50 PM EST
During a thunderstorm, winds with a speed of 45.7 m/s blow across a flat roof with an area of 618 m2 . Find the magnitude of the force exerted on the roof as a result of this wind. (Express answer in kN).
A house is to be designed to withstand hurricane-force winds. The maximum wind velocity is 88 m/s. The surface area of the roof is 450 m2. If the density of air is 1.03 Kg/m3, how much force must the roof supports be able to withstand?
Roof 123 A storm blows wind across the top of a roof at a speed of y-26.5 m/s. Assume the air on the lower side of the roof (inside) is at rest and the roof is flat and has an area A- 39.3 m². The density of air is 1.28 kg/m". 1) What is the pressure differential across the top and bottom of the roof? Pa 2) What is the net lift force on the roof due to the storm?...
Your answer is partially correct. Try again. Interactive Solution 11.35 presents one method for modeling this problem. Multiple-Concept Example 8 also presents an approach to problems of this kind. The hydraulic ol in a car lift has a density of 8.73 x 102 kg/m3. The weight of the input piston is negligible. The radili of the input piston and output plunger are 6.95 x 10-3 m and 0.194 m, respectively. What input force F is needed to support the 23600-N...
A 4 m high noise barrier is to be installed at the side of a major road, and concern is raised about its stability in high winds. It is supported by concrete posts every 20 m, and the maximum base shear force that each post can withstand is 75 kN. Wind tunnel tests reveal that the maximum pressure coefficient, based on the mean wind velocity at the top of the barrier, on the windward face of the barrier is 1.5,...
te ti ti 7 presents a method for modeling this problem. u 5 LER, Kam . offers useful background for problems like this one. A cYlin er is rotating about an axis that passes through the center of each circular end piece. The cylinder has a radius of 0.0650 m, an angular speed ot 6 .0 ad/s, and a mo ment o ne tia ot 0 65 ka- 2. A brake shoe presses against the su tace ot the c...