Athree-point bending test is performed on a glass specimen having a rectangular cross section of height d = 5.2 mm (0.20 in.) and width b = 11 mm (0.43 in.); the distance between support points is 44 mm (1.73 part 1 compute the flexural strength if the load at fracture is 288 n (65 lbf). σf⁢s= mpa

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?