- #1

JoshBuntu

- 11

- 0

## Homework Statement

The diagram is here http://img375.imageshack.us/img375/5930/tensionproblem.png

What is the tension in the cord connecting B and C? How far does A move in the first 0.250 seconds of movement assuming it does not reach the pulley?

## Homework Equations

F=ma

## The Attempt at a Solution

Tension1=(Mass of A)(acceleration)

(Mass of B)(gravity) - Tension1=(Mass of B)(acceleration)

I assumed that the tension in each equation was equal and so set the equations equal, solving for (acceleration):

(acceleration) = [(mass of B)(gravity)]/[(mass of A)(mass of B)] = 3.8 m/s^2

And honestly I just don't know what the hell I'm doing. I've been at this for over 3 hours. I tried to teach this tension thing to myself. What's also really confusing me is that cord between B and C! I don't understand any of the concepts and I don't have anyone to help me, and I also don't know whether or not I'm on the right track. Please help ):

#### Attachments

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