Auniform rod, supported and pivoted at its midpoint, but initially at rest, has a mass 2 m and a length ℓ. a piece of clay with mass m and velocity v0 hits one end of the rod, gets stuck and causes the clay-rod system to spin about the pivot point o at the center of the rod in a horizontal plane. viewed from above the scheme is what is the final angular speed ωf of the rod-clay system?

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.