# The net force is zero the acceleration is zero the

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The net force is zero. The acceleration is zero. The acceleration is zero. moving with constant velocity moving with constant velocity Additional Materials Newton's Second Law Appendix
10/18/2019 Lab 3 - Newton's Second Law: PostLab 10/14 5. 35/35 points | Previous Answers A simple Atwood machine consists of two masses m 1 and m 2 that are connected by a string wound over a pulley, as seen in the figure below. Assume m 2 is larger than m 1 . Motion in the upward direction is positive. On a piece of paper, draw two free body diagrams; one for each of the masses, showing all forces acting on each mass. Then answer the following questions. (a) Identify the forces acting on the mass m 1 . (Select all that apply.) (b) Using the direction rosette indicate the direction for each of the forces acting on m 1 that you identified in part (a). If any of the forces listed below is not applicable, choose 'NA'. m 1 a m 2 a m 1 g m 2 g ( m 1 + m 2 ) ( m 1 + m 2 ) f T F N a g
10/18/2019 Lab 3 - Newton's Second Law: PostLab 11/14 Force Direction m 1 a NA NA m 2 a NA NA m 1 g 1 1 m 2 g NA NA ( m 1 + m 2 ) a NA NA ( m 1 + m 2 ) g NA NA f NA NA T 5 5 F N NA NA (c) Identify the forces acting on the mass m 2 . (Select all that apply.) m 1 a m 2 a m 1 g m 2 g ( m 1 + m 2 ) a ( m 1 + m 2 ) g f T F N
10/18/2019 Lab 3 - Newton's Second Law: PostLab (d) Using the direction rosette indicate the direction for each of the forces acting on m 2 that you identified in part (c). If any of the forces listed below is not applicable, choose 'NA'. Force Direction m 1 a NA NA m 2 a NA NA m 1 g NA NA m 2 g 1 1 ( m 1 + m 2 ) a NA NA ( m 1 + m 2 ) g NA NA f NA NA T 5 5 F N NA NA (e) Write Newton's Second Law equation (in the form F net = ma ) for m 1 in the y -direction. It is important to use the correct signs for each of the forces. Motion in the upward direction is positive and motion in the downward direction is negative. (Be sure to enter your answer in the above form with the sum of the forces in the left hand side answer box. The right hand side answer box should have the appropriate form of ma . Use the following as necessary: a , f , F N , g , m 1 , and T .)
12/14 (f) Write Newton's Second Law equation (in the form F net = ma ) for m 2 in the y -direction. It is important to use the correct signs for each of the forces. Motion in the upward direction is positive and motion in the downward direction is negative. (Be sure to enter your answer in the above form with the sum of the forces in the left hand side answer box. The right hand side answer box should have the appropriate form of ma . Use the following as necessary: a , f , F N , g , m 2 , and T .)
10/18/2019 Lab 3 - Newton's Second Law: PostLab
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