Asolid stainless steel [g = 12,500 ksi] shaft that is 61 in. long will be subjected to a pure torque of t = 855 lb-in. determine the minimum diameter required if the shear stress must not exceed 7,200 psi and the angle of twist must not exceed 5°. report both the maximum shear stress τ and the angle of twist φ at this minimum diameter. answers: dmin = entry field with incorrect answer .88 in. τ = entry field with incorrect answer psi φ = entry field with incorrect answer °

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit. explain why the pneumatic piston stumbles when it hits an obstacle.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86