The pendulum consists of a slender 6-kg rod ab and 9-kg disk. it is released from rest without rotating. when it falls 0.3 m, the end a strikes the hook s, which provides a permanent connection. determine the angular speed of the pendulum after it has rotated 90 degree. treat the pendulum's weight during impact as a non-impulsive force.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables