Question

A mass of 0.5kg extends a spring by 10cm. When an unknown mass, M, is hung on the spring, the extension is 15cm. What is the value of M?

Answer 1

Answer:

Mass added equals M = 0.75kg.

Explanation:

or vertically hung mass force acting on spring equals to weight acting on it that is weight of spring and weight of mass attached to it but considering mass of spring negligible force acting on spring is weight of mass added to it

mg = k x, k = spring constant x = extension of spring

m1/m2 = x1/x2

0.5/M = 10/15

mass added equals M = 0.75kg