# Homework Help: Tension in the string rope

1. Feb 8, 2012

### logearav

1. The problem statement, all variables and given/known data

1) A box of mass 42kg sits on the top of a ladder. Neglecting the weight of the ladder, find the tension in the rope. Assume the rope exerts horizontal forces on the ladder at each end.

2. Relevant equations

m1g – T = m1a

3. The attempt at a solution
T = m1g - m1a
This is the formula i know for calculating the tension
I have mass has 42 kg. But what is the value for acceleration here? Also I dont know because i have values for h and θ in the diagram.
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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2. Feb 8, 2012

### Spinnor

I think you are missing a critical dimension, see,

Edit, not so sure now, think everything is fine.

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Last edited: Feb 8, 2012
3. Feb 8, 2012

### Spinnor

This is more what you want?

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4. Feb 9, 2012

### logearav

Thanks a lot Spinnor. So nice of you in explaining the things so beautifully.