A force of 2N stretches an elastic by 30mm. What additional force will be stretches the material 35mm? Assume that the elastic is not exceeded

Answer 1

To find the additional force needed to stretch the material by 35mm, we can use the formula:

Force = k * x

where:
k = spring constant
x = extension

First, let's calculate the spring constant using the initial force and extension:

2N = k * 30mm
k = 2N / 30mm
k = 0.067 N/mm

Now, we can use the spring constant to calculate the additional force needed to stretch the material by 35mm:

Force = 0.067 N/mm * 35mm
Force = 2.35N

Therefore, an additional force of 2.35N will be needed to stretch the material by 35mm.