1.
\section*{Figure 1}
\includegraphics[max width=\textwidth, alt={}]{67a9cf74-833f-4b4a-9fde-3c62dcc08e8c-2_515_1157_276_516}
A particle \(P\) of mass 0.8 kg is attached to one end of a light inelastic string, of natural length 1.2 m and modulus of elasticity 24 N . The other end of the string is attached to a fixed point \(A\). A horizontal force of magnitude \(F\) newtons is applied to \(P\). The particle \(P\) in in equilibrium with the string making an angle \(60 ^ { \circ }\) with the downward vertical, as shown in Figure 1.
Calculate
- the value of \(F\),
- the extension of the string,
- the elasticity stored in the string.