MHB Calculating Lever Length for Optimal Effort: 0.6 kg Bar & 200 kg Object

[leprofece]

a heavy bar, weights 0.6 Kg is used as a lever for
pick up an object from 200 Kg situated 60 cm
from the point of A support
Calculate the length that should have the bar to lift the
object with a minimum of effort

answer 2 m

ok we know 0.6x = 200.0.2 m
But how can I continue?

 

[MarkFL]

Re: a bar problem

The longer the bar, the greater the mechanical advantage, which leads me to believe there is more here than is being presented. Can you post a diagram?

 

[leprofece]

Re: a bar problem

The longer the bar, the greater the mechanical advantage, which leads me to believe there is more here than is being presented. Can you post a diagram?

The only thing missing is that it Is located at 60 cm from the point of A support

 

[MarkFL]

Re: a bar problem

So, the fulcrum is 60 cm from the end of the bar on which is located the load. The longer the bar, the smaller the force that is required to lift the load. I still say there is something missing here. Please post a diagram...this will make the problem more clear.

 

[leprofece]

Re: a bar problem

Oh my book doesnot provide any diagram

 

[MarkFL]

Re: a bar problem

Oh my book doesnot provide any diagram

Perhaps you can draw a diagram that reflects your understanding of the problem. This would be a supplement to the words you have used to state the problem, which at this point have not clearly elucidated the problem for me.