The answer should not depend on k or r. You could use them as stepping stones.

(5 Points) A particle is modeled as a simple harmonic oscillator. When it has displacement 7'1, it has velocity 7'1. When it has displacement 7'2, it has velocity 7'2. Find the angular frequency of the particle, as well as the amplitude of the motion in terms of 7'1, 7"1, T2, and 7'2. While the spring has a spring constant k and particle has mass m, l still want the answers expressed in the 4 stated parameters