Aboy picks up a bowling ball. which of the following choices correctly describes the interaction between the boy and the bowling ball? a. the boy exerts an upward force on the ball, and the bowling ball exerts a downward force on the boy. b. both forces are equal in strength. the boy exerts an upward force on the bowling ball, and the bowling ball exerts a downward force on the boy. c. the bowling ball’s force on the boy is the greater force. the boy exerts an upward force on the bowling ball because the ball accelerates. d. the bowling ball does not exert a force on the boy because the boy does not accelerate. e. the boy exerts an upward force on the bowling ball, and the bowling ball exerts a downward force on the boy. f. the boy’s force on the bowling ball is the greater force.

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

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?

This is the number of complete movements of a wave per second.