A muscle hanging from a beam is shown in Figure P2.37(a) (Lessard, 2009). The -motor neuron can

A muscle hanging from a beam is shown in Figure P2.37(a) (Lessard, 2009). The α-motor neuron can be used to electrically stimulate the muscle to contract and pull the mass, m, which under static conditions causes the muscle to stretch. An equivalent mechanical system to this setup is shown in Figure P2.37(b). The force F_iso will be exerted when the muscle contracts. Find an expression for the displacement X₁(s) in terms of F₁(s) and F_iso(s).

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Reference Fiso a-motor neuron velocity Load m Load m F1 F1 (a) (b) FIGURE P2.37 a. Motor neuron stimulating a muscle;" b. equivalent circ uit's