Ineed with question 4b, can someone give an explanation and an answer? (15 points)

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

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.