An uniform rigid bar of length \(\ell=50 \mathrm{~cm}\) and mass \(m=7 \mathrm{~kg}\) is hinged at one end (Figure P1.7). At the other end, this bar is suddenly attached to a massless spring with stiffness \(k=1,000 \mathrm{~N} / \mathrm{m}\). Derive an expression for the angular oscillation of the bar.

Figure P1.7

Transcribed Image Text:

l 80 g k