A hammer hits a mass m on the end of a metal bar. In Chapter 5 we will see that this impar...

A hammer hits a mass m on the end of a metal bar. In Chapter 5 we will see that this imparts an instantaneous initial velocity υ0 at x = 0 to the mass. Treating the bar as a massless spring, determine the equation of motion of the mass m. The equivalent spring constant of a bar in compression is given by keq = EA/L, where E is Young’s modulus of the bar, A is the cross-sectional area of the bar, and L the length of the bar.

Figure P3.6