- #1

J-dizzal

- 394

- 6

## Homework Statement

In the figure, a 128 kg uniform log hangs by two steel wires,

*A*and

*B*, both of radius 1.15 mm. Initially, wire

*A*was 2.80 m long and 2.00 mm shorter than wire

*B*. The log is now horizontal. Young's modulus for steel is 2.00 × 1011 N/m2.

What are the magnitudes of the forces on it from

**(a)**wire

*A*and

**(b)**wire

*B*?

**(c)**What is the ratio

*dA/dB*?

## Homework Equations

[tex]Force/Area = E (ΔL/L)[/tex]

E=2.00x10

^{11}N/m

^{2}

L is length of wire

## The Attempt at a Solution

edit. i managed to get the forces, working on da/db

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