A load of 12N stretches on spring by 80mm.find the weight which produces an extension odf 60mm or some string?

extension is proportional to load F = k X

so
(60/80) * 12 Newtons

A load of 12N stretches on spring by 80mm .find the weight which produces an extension of 60mm or the string

You could not find 3/4 times 12 ?

A load of 12N stretches a spring by 80mm.find the weight which produces on extension of 60mm on the same spring ?

Non

To find the weight that produces an extension of 60mm on the spring, we can use Hooke's Law, which states that the force exerted by a spring is directly proportional to the extension of the spring.

Hooke's Law can be written as:

F = k * x

Where:
F is the force exerted by the spring
k is the spring constant
x is the extension of the spring

First, we need to find the spring constant (k) of the spring. We can do this by rearranging Hooke's Law equation:

k = F / x

In this case, the load of 12N stretches the spring by 80mm. So, we can substitute the values in the equation:

k = 12N / 80mm

Now, we have the value of the spring constant (k) as 0.15 N/mm.

Next, we need to calculate the weight that will produce an extension of 60mm using the same spring. Since weight is a force, it can be calculated using the equation:

Weight = k * x

Here, we want to find the weight (W), for an extension of 60mm (x):

W = 0.15 N/mm * 60mm

Simplifying the equation, we find:

W = 9 N

So, the weight that produces an extension of 60mm on the spring is 9 Newtons.