dont shout at me if you know who my science teacher is or what project i am talking about...
anyway i have a project due in three months and i really need help getting started. can anyone show me a website or the name if a book which can help me with my project? we have to build a hoist that can lift a mass of 2 kilograms 10 cm up and 10 cm to the side...with one switch..but we have no idea how to build it or where to put the switch or the motor or anything at all...
PLEASE HELP US!!!!!!!!!!!!!!!!!!!! =]
AND I REPEAT: DO NOT CUSS AT ME or any mean comments please?
2007-11-10 10:03:43 · 6 answers · asked by *~Simplymyself~* 3 in Science & Mathematics ➔ Engineering
and to Steve C...thank you for the suggestion, but the assignment is to actually build a hoist (like a crane) without the help of inclined planes....
2007-11-11 05:44:59 · update #1
there are more details about the project at this question:
http://answers.yahoo.com/question/index?qid=20071110105258AApypw6
2007-11-12 07:35:29 · update #2
dont tell me anything specific on exactly how to do it...just some links cuz we cant find anything on the internet!!!
2007-11-12 09:58:04 · update #3
Lol, you got ricks too. I've got him 3rd. Just had conferences. Blah. Lol. Good luck. Felice and Mingyu are in my group :D
2007-11-13 10:25:34 · answer #1 · answered by Beauty Junkie ♥ 3 · 0⤊ 0⤋
probably not quite what they're looking for you but might get some credit for "creativity" with the following.
One of the oldest "machines for lifting things is the inclined plane. I'll use the diagram on the wikipedia entry to help explain.
to get the required climb in the specified length, you need a gradient of 1 in 1, and you want the angle theta to be 45 deg.
I calculated the force required to pull the mass up the hill (neglecting friction), acting in a line parallel to the plane, to be just under 14 Newtons, (as apposed to about 20 N for a direct lift). The force could be provided by a single "drum winch" (like these from machinemart
http://www.machinemart.co.uk/images/library/range/small/0446.jpg?
)
In your case you want a smaller one powered by an electric motor (some gearing and a cotton reel perhaps). Motor can then controlled by single switch as required.
If you cannot simply send the object to be lifted up the slope. build two inclined planes, and place them some distance appear. have a carriage with wheels that rest on the inclined planes, and have a bar between the carriage's wheels for attaching a lifting cable. You can raise the entire thing off the ground so that the mass fits underneath. It would work much like a monorail, but with the rail on a slope.
2007-11-10 10:53:37 · answer #2 · answered by Steve C 6 · 0⤊ 0⤋
Try an Internet search for manufacturers of monorail cranes. Their pictures should give you some good ideas for design concepts.
2007-11-10 10:21:21 · answer #3 · answered by Tim C 7 · 1⤊ 0⤋
in ricks? i hav the best idea and im selling it 4 7bucks.... im in period4 and my names bob wats ur name
2007-11-11 09:14:14 · answer #4 · answered by anonymous 2 · 0⤊ 0⤋
lol wow who are u
i have ricks
cheater o.O
2007-11-12 09:22:20 · answer #5 · answered by bobthebarbarian 1 · 0⤊ 0⤋
hey there who are you? i'm in period 3 what about u?
2007-11-11 07:12:00 · answer #6 · answered by Greyraid 2 · 0⤊ 0⤋