The time period of a simple harmonic oscillator is \(T=2\pi \sqrt{\frac{k}{m}}.\) Measured value of mass ( m ) of the ob…

The time period of a simple harmonic oscillator is \(T=2\pi \sqrt{\frac{k}{m}}.\) Measured value of mass (m) of the object is 10 g with an accuracy of 10 mg and time for 50 oscillations of the spring is found to be 60 s using a watch of 2s resolution. Percentage error in determination of spring constant (k) is _____ %.