Abstract: An experiment on force deformation was conducted on mature fruits of mango cv. Dashehari (collected from India). The first yield point in a sample was observed at 0.30 kN with a rupture point at 0.48 kN. Results indicated elastic behaviour up to 0.30 kN force, plastic beyond 0.48 kN and elastoplastic in between 0.30 and 0.48 kN. Strain energy required for first yield point was calculated using E = F*D/2, where E = strain energy, F = force applied and D = deformation. The energy required for the first yield point was calculated as 0.084 Nm and second rupture point was at 0.25 Nm strain energy.