1) Consider the four free body diagrams. Free-body diagrams are used to
show the magnitude and direction of all forces acting on an object in a
given situation. Do any of the free body diagrams indicate motion? If
yes, which one(s).

A). No. In all four free body diagrams the forces are
balanced.
B). Yes. In B the book is slowing down because of the
friction force opposing motion.
C). Yes. In the two forces are unbalanced. The upward
force is greater than the force of gravity so the object
moves upward
D). Yes. In B and D. In both cases, forces are unbalanced.
In B. there is a net force to the left; in D there is a net
force upward

5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?

If state law mandates that elevators cannot accelerate more than 2.40 m/s2 or travel faster than 14.8 m/s , what is the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor? ?

Which system of units is used by only a small number of countries in the world, including the u.s.