- #1
zeshkani1985
- 15
- 0
Ok I had these 3 questions: I believe I have ansered the first 2 but I' am just stuck on the third.
1. an aircraft has a glide ratio of 12 to1 m, a building that is 45m high lies directly in the glide path, the plane clears the building by 12m, how far is the run way from the building?
ANS: I just took the 12mx45m= to give me 540m i' am pretty sure this is right?
2.to cross a river that is 1km wide, with a current of 6km/hr, a boat that is perpendicular to the far bank, the boat speed is 10km/hr. at what position will the boat actually contact the far bank? what direction should the boat have to cross directly across?
ANS: here i made a right triangle and just used the 6^2 +10^2 = x^2, so he will actually contact the far bank at 11.6km away. 2part: since having figured out his actual contact point i figured the angle and by using the law of sines that it was 31.3 degrees
I think the first part is right, i' am not sure about the 2nd
3. design a hydraulic holding system for a hay-baling system, the system has four cylinders with a 120mm diameter pistons with a stroke of 0.320m, the lines connecting the system are 1cm id(inside diameter). there are 15.5m of lines in the system. for proper design, the reserve tank should hold a minimum of 50% more then the amount of hydraulic fluid in the system, if the diameter of the reserve tank is 30.48cm what is the shortest height it should be?
This question I' am completely stuck on, I have no idea were to start, any pointers would be great
1. an aircraft has a glide ratio of 12 to1 m, a building that is 45m high lies directly in the glide path, the plane clears the building by 12m, how far is the run way from the building?
ANS: I just took the 12mx45m= to give me 540m i' am pretty sure this is right?
2.to cross a river that is 1km wide, with a current of 6km/hr, a boat that is perpendicular to the far bank, the boat speed is 10km/hr. at what position will the boat actually contact the far bank? what direction should the boat have to cross directly across?
ANS: here i made a right triangle and just used the 6^2 +10^2 = x^2, so he will actually contact the far bank at 11.6km away. 2part: since having figured out his actual contact point i figured the angle and by using the law of sines that it was 31.3 degrees
I think the first part is right, i' am not sure about the 2nd
3. design a hydraulic holding system for a hay-baling system, the system has four cylinders with a 120mm diameter pistons with a stroke of 0.320m, the lines connecting the system are 1cm id(inside diameter). there are 15.5m of lines in the system. for proper design, the reserve tank should hold a minimum of 50% more then the amount of hydraulic fluid in the system, if the diameter of the reserve tank is 30.48cm what is the shortest height it should be?
This question I' am completely stuck on, I have no idea were to start, any pointers would be great