a) Point P in the figure indicates the position of an object traveling at constant speed clockwise around the circle.

Which arrow best represents the direction of the object's acceleration at point P?

b) Which of the following free body diagrams best represents (with scaled force arrows) an elevator with a person in it traveling upward? The elevator begins to approach the desired floor and the speed decreases every second by 9 m/s, F_f is the force of the floor on the person and F_g is the force of gravity on the person. 

c) In an Artwood machine, two different masses M and m (M>m) are connected by a light string passing over a pulley of negligible mass, as shown in the figure. Friction is negligible and when the pulley disengages, the system accelerates. Which figure below gives the correct exposure diagrams for the two masses in the system?  
 

Transcribed Image Text:

-5 -3 -2 3+ 2+ -1+ -2+ -3+ -5+ y 123 P 5x -5 -3 -2 3+ 2+ -1+ -2+ -3+ -5+ y 123 P 5x