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Dynamics of Mechanisms

03/26/2006 5:38 PM

Mahavir Kanwed writes:
I need to lift a weight of approximately 500 kg so I need to calculate the amount of force necessary to offset the gravitational force of the 500 kg. Can anyone help?

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#1

555 kg

03/26/2006 11:02 PM

Is this a trick question? 500 kg of force would negate the gravity but would it lift the weight. I don't think so. It would have to be anything over 500 kg.

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Guru

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#2

rukidding?

03/26/2006 11:21 PM

In case you're not, or if it is a trick question, F=MA so: 9.8 M/S^2 * 500 KG = 4900 Newtons of FORCE required to counter the gravitational acceleration on a MASS of 500 KG.

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#3

Mechanical lift???

03/27/2006 9:09 AM

C'mon...Hire or contract out a designer/engineer to review what you need and go by his/her recommendations. You don't even know how to describe your 'problem'! You must be a sales/marketing person. Maybe a manager who wants to impress the boss by getting something for nothing.

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#4
In reply to #3

Re:Mechanical lift???

03/27/2006 9:42 AM

No, this is the problem when US companies outsource engineering work to India and other "English speaking" Third world countries for lower costs. The IT industry went through this already, found out that true costs were much higher, in terms of errors and other miscommunications. IT is now shifting back to USA sourcing. Soon Engineering industries will find their mistake also.

Unfortunately for the US, a manufactured good is a manufactured good, and once over initial errors, high-volume production costs are extremely lower overseas for labor and manufacturing engineering, so it is extremely difficult to bring back high-volume manufacturing. However, there will always be some niche manufacturing that will never leave the US because the cost of NOT getting it right the first time is way too high for low volumes, and good communications between customer, designer, and manufacturing is essential.

I will now descend from my soapbox!

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#5
In reply to #3

Careful CarmineSD7...

03/27/2006 9:44 AM

it could be your manager :-P haha

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#7
In reply to #5

Re:Careful CarmineSD7...

03/27/2006 4:54 PM

Not if I have anything to say about it! A manager must include the company to benifit from his decisions. Not just his ego. FYI...it is C_A_R_M_I_E, no harm- no foul.

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#6

Dynamics of Mechanisms? Oh, please!!

03/27/2006 9:50 AM

Mahavir (if that is your real name),

You will need about 1100 Pounds of force to "offset the gravitational force of the 500 kg."

I will leave it to you to convert Pounds of Force into British Pounds-Sterling.

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#8

Homework?

03/28/2006 12:57 AM

Mahavir, it looks like you are a high school student passing your home work to atechnical forum which is formed to discuss serious technical issues. I would suggest that open your text book and solve the simple problem. Unfortunately, your question has raised unhealthy rants about outsourcing, creating political situations and negative comments about countries like India, China and others.

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#9
In reply to #8

Re: Homework?

11/24/2006 11:57 AM

The OP must have been posted FOR the originator to make some point. Communication(s) with foreign entities can be extremely frustrating to come to a COMMON understanding of what the discussion is about and what are real facts and what are misconceptions.

Perhaps a new thread would be appropriate for a discussion of what should and what should not be outsources. Such a discussion should arrive at some conclusion as to what should and should not be outsourced.

STL_Engineer's self styled soap box statements seemed to me to set out the case and not a rant per se.

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