The discussion revolves around a physics problem involving a 3kg mass hanging over a pulley and a 5.4kg brick on a horizontal surface, with a frictional force of 12.01 N. Participants are exploring how to calculate the tension in the rope connecting these two objects.
Some participants have provided insights into the relationship between tension and net forces, suggesting that drawing free-body diagrams may help clarify the problem. There is an acknowledgment of confusion regarding specific lab questions, indicating that the discussion is ongoing and participants are actively seeking clarity.
Participants mention uncertainty about how to begin solving the problem and express confusion regarding specific aspects of the lab assignment, which may be influencing their understanding of the tension calculation.
David999 said:Homework Statement
Well for a lab we did, there's a 3kg mass hanging over a pulley, attached to a 5.4kg brick by a rope, causing the brick to accelerate over a horizontal surface. I have no idea how I'm supposed to calculate the tension.
Oh, and the force of friction is 12.01 N.
Homework Equations
F=ma?
The Attempt at a Solution
I don't even know where to begin.
Thank you!
SArnab said:The total tension in the rope will be the net force acting on the brick. If you draw a free-body diagram, you see that the net force is equal to the frictional force subtracted from the tension caused by the 3kg mass.
[tex]T_{net}[/tex] = [tex]F_{net}[/tex] = ([tex]T_{mass}[/tex] - [tex]F_{friction}[/tex])