Question

A sledgehammer is released from rest when 0 = 90°, and the spring has a tension of 125 N. The sledgehammer may be modeled as a concentrated mass of 15 kg, located L₁ + L2 away from the pivot. If h = 35 cm, L₁ = 15 cm, L₂ = 70 cm, and the spring has a stiffness of k = 350 N/m,find the linear speed of the head of the sledgehammer when 0 = 180°.

\text { When } \theta=180^{\circ} \text {, the head is traveling at }

Fig: 1

Fig: 2

Fig: 3