In a physics experiment on static friction, two objects made

of identical material are tied together with string. the fi rst

object has a mass of 5.0 kg and the second object has

a mass of 3.0 kg. students measure the maximum force

of static friction as 31.4 n to move both objects across a

horizontal surface. t/i

(b) what is the magnitude of the tension in the string if

they pull on the fi rst object?

(c) a student pushes the 3.0 kg object with a force of

15.0 [down]. what are the magnitudes of the maximum

force of static friction and the tension now?

(d) will your answers to (c) change if the student pushes

down on the 5.0 kg object instead? explain.

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?

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point

5400 j of energy are given off when a 50 g of aluminum pan changes temperature. does the temperature of the pan increase or decrease and by how much?