An airplane propeller is 1.85 m in length (from tip to tip) with mass 109 kg and is rotating at 3000 rpm (rev/min) about an axis through its center. you can model the propeller as a slender rod. suppose that, due to weight constraints, you had to reduce the propeller's mass to 75.0% of its original mass, but you still needed to keep the same size and kinetic energy. (a) what would its angular speed have to be, in rpm? (b) what is its rotational kinetic energy? k = 1.53×10^6

An ascending elevator, hanging from a cable, is coming to a stop. part a part complete identify all forces acting on the elevator from the list below. select all that apply. select all that apply. kinetic friction normal force tension weight static friction submitprevious answers correct part b draw a free-body diagram of the object. draw the vectors starting at the black dot. the location and orientation of the vectors will be graded. the exact length of your vectors will not be graded but the relative length of one to the other will be graded.