Question

A spring with a force constant of 600 N/m is used on a scale for
weighing fish. What is the mass of a fish that would stretch the spring by 7.5
cm from its normal length?

Answer 1

Answer:

2 nd one is the ans........if u are

Explanation:

confused please say

Answer 2

Answer:

The mass of the fish is 4.5 kg.

Explanation:

[Refer to the attached image.]

We can write the following equation from the free-body diagram in the figure.

Mg - kx = 0 -------------(1)

Where  M is the mass of the fish

K is the force constant

x is the length of spring extending from the mean position

Given :

k = 600 N/m

x = 7.5 cm = 0.075 m

Now using eq (1) we get

Mg - 600 x 0.075 = 0

=> Mg = 600 x 0.075

=> Mg = 45 N              [the value of g is taken as 10 m/s²]

=> M = 45/10 = 4.5 kg

So, the mass of the fish is 4.5 Kg.