- #1
itheo92
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Homework Statement
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
Homework Equations
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 can't get a equation to put.
actually I'm weak at the elasticity related issues, but I guess It's not too hard...
Homework Statement
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??
Homework Equations
The Attempt at a Solution
I think, the escape velocity will not change...it's same for all direction...am I wrong?