Physics

[Gibson486]

I have a quick question that seems to be bugging me time and time again! How do you calculate tension on a rope netween two objects? My book has absolutley no insight. At first, I thought it was T-m(#2)a=m(#1)a. then solve. You get teh picture, basically the take teh mass and acceleartion of the faster object and set it equal to the ma of the two masses. I thought that was it, but it only seemed to work in 1 case I have used. Is there a sure fire way to calculate tension?

 

[Tdawg951]

it depends on the problem, usually you need to sum the forces on teh object and then you can calculate the tension

 

[MacBaine]

What ever happened with that other question you asked about? The one where the guy was throwing the ball up to his friend on the building, and they only give you the height and distance and ask to find the components for the velocity? It was impossible to figure out using the information given... what did your teacher say about it?

 

[Jittles]

too many 'teh's dudes.

 

[Triumph]

your statement of the problem is pretty ambiguous, so i'll generally guide you. just replace the T with an F, a force. you'll have to solve for it like any other unknown force, via your FBD. do a FBD for each object, and recognize that the rope tension force on object A will be equal and opposite to the rope tension force on object B.

a clearer statement of the problem would help.

 

[Darien]

articulate better, then hopefully i can answer your question.