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An elastic wire suspended from a workbench has a 2kg mass attached to its free end. The wire changes in length by 2cm. Calculate the elastic potential energy stored in the wire.

Using Hooke's law (F = k * e) we can find the spring constant. Rearranging for k, we find that k = (9.81 * 2)/0.02 = 981 N/m. To calculate this we needed to find the force acting on the wire (F = mg) and ...

JG
Answered by James G. Physics tutor
2075 Views

What is an atom?

It is composed of Protons, Neutrons and Electrons.
The Proton is positively charged and is present in the central nucleus part of the atom.The Neutron has no charge and also is present in the nucleus...

SB
Answered by Sam B. Physics tutor
2025 Views

Factorise 3x^2+15x

Firstly we need to understand what the question is asking us to do. Factorise means we need to take out the Highest Common Factor (HCF) that each term can be divided by.The two terms in this question is 3...

HC
Answered by Hinesh C. Maths tutor
4355 Views

Explain 'reversibility' within the SPORT principles

Reversibility within the principles of training suggests skill, strength, endurance and technique can be lost as easily as it can be gain. To improve any part of performance an athlete must train specific...

Answered by Physical Education tutor
12283 Views

What is the inverse of a function and how do you find it?

  • A function, f(x), is something that takes various input values of x, and for each one, generates an output value, e.g. if f(x) = x2 then when x=3, f(x) = f(3) = (3)2 = 9, which...
JM
Answered by Jack M. Maths tutor
3514 Views

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