I have to find the mass of an object. The problem is that my result is a negative one.
The problem is as follows:
A teacher demonstrates a harmonic motion with an object of mass m0, hung on a wire with constant k. A mass of 1,25g is added to the object, which results in a loss of 2.5% of the original frequency.
What is the (original) mass of this object?
I tried, but I got -0.025 Kg.
The solution is provided in an attachment with a diagram and a step-by-step completed equation.