(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Three wires are made of same materials. Which wire will have the greatest elongation?

wire1: length: 50cm, diameter: 0.5mm

wire2: length: 100cm, diameter: 1mm

wire3: length: 300cm, diameter: 3mm

2. Relevant equations

3. The attempt at a solution

I know, the wire having greatest elongation will have the greatest Young's modulus.

So, i have to calculate the young modulus from the given data of the three wires. but I cant get a equation to put.

actually i'm weak at the elasticity related issues, but I guess It's not too hard....

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

The escape velocity from earth is v. if the body is projected from the earth in a direction of 45 degree to the vertical then it's escape velocity is??

2. Relevant equations

3. The attempt at a solution

I think, the escape velocity will not change...it's same for all direction....am I wrong?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Greatest elongation and escape velocity HELP

**Physics Forums | Science Articles, Homework Help, Discussion**