Asemi-elliptical spring has ten leaves in all, with the two full length leaves extending 625 mm. it is 62.5 mm wide and 6.25 mm thick. design a helical spring with mean diameter of coil 100 mm which will have approximately the same induced stress and deflection for any load. the young's modulus for the material of the semi-elliptical spring may be taken as 200 kn/mm2 and modulus of rigidity for the material of helical spring is 80 kn/mm2

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.