A fuel pump is driven by a motor-powered flywheel. The pump behaves as a spring with still...

A fuel pump is driven by a motor-powered flywheel. The pump behaves as a spring with stillness 2 N/mm that is unstretched when α = ±60°. Neglect any possible dynamic effects.

(a) Determine the largest tensile and compressive forces spring AB experiences dur­ing one revolution of the flywheel, and state the positions α where these occur.

(b) Without further analysis, is it certain that the largest tensile and compressive forces in crank arm BC occur at the same positions α determined in Part (a)? Explain.

Figure P3.39