Activity 2-2: Net Force and Newton's First Law Question 2-9: In the previous lab, you found that the force applied to an object is proportional to the acceleration of the object (Newton's second law). In this activity, you found that the acceleration of the IOLab was nearly zero. What net force produces zero acceleration (results in motion of an object at a constant velocity)? (This is Newton's first law.) Acquisition Sets (Fixed duration 5 sec) Run3 (ID: 538265ba-ac1e-423e-b140-6782d187bf56) [Remove] Run4 (ID: 0148554b-0f11-4557-97be-fbdaaa9f52c3) [Remove] Force (200 Hz) Remote 1 t: 1.68993 s Question 2-10: State Newton's first law in words in terms of the net force on an object that moves with a constant velocity. Newton's First Law of Motion states that the net external force acting on the object must be zero. This is because any net force would cause a change in velocity, which contradicts the condition of constant velocity. Question 2-11: Based on your measurements, what is the magnitude of the frictional force? Explain how you found this value. Save & Go Next Fy (N) 2.0- Fy: -0.134 N 1.5 Fy: -0.134 N 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0- 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Rezero sensor Wheel - Velocity (100 Hz) Remote 1 5.0 Time (s) t: 1.68972 s 2.0- Vy: 0.182 m/s Vy: 0.140 m/s 1.5 1.0 0.5 vy (m/s) 0.0 -0.5 -1.0 -1.5 -2.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 ♫ * 5.0 Time (s) Wheel - Acceleration (100 Hz) Remote 1 t: 1.68972 s 2.0- ay: 0.000 m/s² 1.5 1.0 0.5 0.0 ay: -0.145 m/s² My -0.5 -1.0 -1.5 རྦྦ ༷ ༅༔ ༷ ༷ ? î 5 ay (m/s²) * -2.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Time (s)