Arod of mass m and length l can rotate about a hinge at its left end and is initially at rest. a putty ball of mass m, moving with speed v, strikes the rod at angle θ from the normal and sticks to the rod after the collision. what is the angular speed ωf of the system immediately after the collision, in terms of system parameters and i?

The 20@kg wheel has a radius of gyration about its center g of kg = 300 mm. when it is subjected to a couple moment of m = 50 n # m, it rolls without slipping. determine the angular velocity of the wheel after its mass center g has traveled through a distance of sg = 20 m, starting from rest.

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?