automative lif rasise a 3500lb car 7ft above floor level if the hydraulic cylinder contain 8in diameter piston?

An automotive LIFOtraisese a 3500lb car 7ft above floor level if the hydraulic cylinder contain 8in diameter piston and a 4in diameter rod,determine the
A. work necessary to lift the car
B. required pressure
C. power if the lift raises the car 10 s
D. Descending speed of the lift for a 10-gpm flow rate
E. flow rate for the auto too descend in 10 s

Chosen Answer:

All these answers based on 8 inch lifting cylinder. You haven’t specified anything about the 4 inch rod so haven’t used that in these answers

a). work = force x distance
work = 3500 lb x 7 ft = 24,500 ft-lbs of work
————————————————-
b) 8 inch diameter piston = area of pi * r^2 = 50.26 sq inches
3500 lb / 50.26 in^2 = 69.6 psi pressure
——————————————–
c) power = work / time = 24,500 ft-lbs / 10s = 2450 ft-lb/ second
(one foot-lb /second = 0.738 watt so –> 2450 * .738 = 1,808 watts of power in SI system)
—————————————————————-
d) volume of a cylinder = pi * radius squared * height
one gallon = 231 cubic inches
10 gallons = 2,310 cubic inches
V =2,310 cubic inches = 3.14 * 4in ^2 * height
height = 2310 / (pi * 16) = 45.96 inches

So 10 gallons a minute will lift car or descend car 45.96 inches or 3.8 feet a minute
————————————————————————————————–

e) Flow rate to descend in 10 seconds instead of a minute is 6 times faster (60 sec a minute / 10 sec) = 6.
6 * 10gpm = 60 gpm
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by: biire2u
on: 14th April 10

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Job Search Methods in Job

Finding a job can take months of time and effort. But you can speed the process by using many methods to find job openings. Data from the Bureau of Labor Statistics suggest that people who use many job search methods find jobs faster than people who use only one or two.

Personal contacts. Many jobs are never advertised. People get them by talking to friends, family, neighbors, acquaintances, teachers, former coworkers, and others who know of an opening. Be sure to tell people that you are looking for a job because the people you know may be some of the most effective resources for your search. To develop new contacts, join student, community, or professional organizations.

School career planning and placement offices. High school and college placement services help their students and alumni find jobs. Some invite recruiters to use their facilities for interviews or career fairs. They also may have lists of open jobs. Most also offer career counseling, career testing, and job search advice. Some have career resource libraries; host workshops on job search strategy, resume writing, letter writing, and effective interviewing; critique drafts of resumes; conduct mock interviews; and sponsor job fairs.

Employers. Directly contacting employers is one of the most successful means of job hunting. Through library and Internet research, develop a list of potential employers in your desired career field. Then call these employers and check their Web sites for job openings. Web sites and business directories can tell you how to apply for a position or whom to contact. Even if no open positions are posted, do not hesitate to contact the employer: You never know when a job might become available. Consider asking for an informational interview with people working in the career you want to learn more about. Ask them how they got started, what they like and dislike about the work, what type of qualifications are necessary for the job, and what type of personality succeeds in that position. In addition to giving you career information, they may be able to put you in contact with other employers who may be hiring, and they can keep you in mind if a position opens up.

Classified ads. The “Help Wanted” ads in newspapers and the Internet list numerous jobs, and many people find work by responding to these ads. But when using classified ads, keep the following in mind:

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The Rules of Overtaking: Designated Lanes, Signs and Signals in Vehicle

Have you ever been on a highway, moving at the speed limit, and you end up behind someone going five miles under the speed limit? If you signaled your vehicle into the next lane and drove past them, that is considered passing or overtaking. In most countries, overtaking another vehicle must be done in a certain manner in order to be considered acceptable or fall in line with safe practices while on the road.

Designated Lanes for Overtaking of Vehicles

In the United States, vehicles that would like to overtake a slower vehicle are always required to use the left lane to carry out the action. On multilane highways, this may be the lane just to the left of a slow moving vehicle vs. the farthest left lane. The only time a vehicle should be passed in the right hand lane is when the motorist overtaking the vehicle is coming onto the highway from an on ramp or in the case of attempting to avoid an accident. As a general rule, passing should always be done using the lane farthest from the shoulder of the road.

In the majority of other countries, the overtaking of slower moving vehicles takes place in the right hand lane, as this lane would be farther from the shoulder. However, there are many other things to consider before attempting to overtake a vehicle on the roadway.

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The majority of countries worldwide make an attempt to alert motorists of the capability and restriction of overtaking other vehicles. In the United States, for instance, it is okay to overtake another vehicle in zones where the center line is broken.

This is often in white; however, it may also be yellow.

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Use of HOV/HOT Designated Lanes for Overtaking

It is illegal for vehicles not meeting the criteria to travel in HOV/HOT lanes to overtake another vehicle using these lanes. The only time this may be considered an acceptable practice is in the incidence of an accident in which police officers actually direct the motorists to do so. Any other instance may result in hefty fines, points on a motorist’s driver’s license and lost time in court.

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what is the cost of yo speed at kolkata?

i want to know more about yo speed.

Chosen Answer:

Around Rs 35k in Ahmedabad..

‘YoSpeed’ is India’s first 750-watt electric vehicle approved by the Automotive Regulatory Authority of India (ARAI). The new byke with 33AH battery and 750 watts motor, can carry two persons and run for 500 km at the cost of one litre of petrol (around Rs 50). It will compete with the regular petrol-run two-wheelers in the 75-100 cc segment since it can reach a top speed of 45 km per hour. But similar to the EVs the fuel cost is as low as 10 paise for per kilometre. If it moves around 1500 km a month, it will save more than Rs 16,000 annually of your fuel costs. Yospeed is chargeable in six to eight hours with a power consumption of 1.6 units and with a single charge, Yospeed can carry one person to a distance of 80 km and two persons to 65 km.

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by: Don’t complicate things! 🙂
on: 12th December 08

Advantages of Motorized Treadmills in Machine

Motorized Treadmills are powered by a motor that is connected to the belt of the machine and helps in automatic adjustment of speed and movement. Though compared to manual treadmills, motorized ones are more expensive but if you consider the advantages you can avail with them they are far more superior. Firstly they are built tough and strong and so they tend to work smoothly for several long years, you can practice on them for several years without any problem. Unlike manual machines the belt of motorized machine moves at your desired speed. You can run, adjust and set the speed to your comfort; this actually can be great motivation booster while practicing on such machines. Also it is observed that automatic machines result in faster calories burning as people feel comfortable on them and practice for longer hours.

The features and benefits offered by motorized treadmills are far better than other similar manual machines. Its comfort and attractiveness makes your workout interesting and you feel enthusiasm while working out on these machines. Especially if your condition is such that you need faster and reliable results you must avoid manual ones and prefer more advanced automatic motorized machines. It is for this reason that most of the workout equipments available now in the market are automatic and motorized.

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