1. The problem statement, all variables and given/known data Point with mass is moving along the positive direction of x axis, its velocity is described by (A-Bx^2)^(1/2). Show that its equation of motion describes dynamic harmonic oscillation and find period (T) of this oscillation. 2. Relevant equations v=(A-Bx^2)^(1/2) A and B is known constants 3. The attempt at a solution Hi, guys! My first instinct is to try to get something from F=m*a=-k*x. Further more m*(dv/dt)=-k*x, but immediately i see that its wrong because v=v(x) not v(t). So ,please, could someone give me some advice. Thank you!