1. You go walking up to the outside door of the Rec Center to leave the building, push on the bar to open the door, and find that you (once again!) pushed on the wrong end of the bar and are just about walking into a door which is still closed. You really hate when that happens, but you understand that the door did not open because

a. you did not apply a great enough force.

b. the mass of the door was too great.

c. the moment arm for the applied force was too small.

d. the door was not in a state of equilibrium.

e. the angular acceleration of the door was too great.

You draw a circle of radius 22 cm on a piece of paper.  You then draw two radii that have an angle of 37^obetween them. 

2. What is the angle between the two radii in radians?

a. 0.12 rad    b. 0.27 rad   c. 0.54 rad    d. 0.65 rad   e. 0.93 rad

3. What is the arc length subtended by the angle?

a. 7 cm  b. 14 cm   c. 27 cm  d. 35 cm   e. 42 cm

You hold your arm out horizontally in front of you with the palm of your hand facing upwards, and a friend places a 200-g mass in your palm.

4. Approximately how large is the torque exerted by the weight of the 200-g mass about your shoulder pivot (the axis)?

a. 0.011 N m     b. 0.21 N m   c. 1.5 N m      d. 3.4 N m    e. 5.7 N m