Answer Happy

Part III: Moment of Inertia Experiment 1 Select the Moment of Inertia tab at the top of the program. Click and drag on the platform in such a way as to create a torque of about 5 Nm. What must have been the value of the applied force? a. Use the torque to calculate the angular acceleration of the disk. Does it match the value from the graph? Experiment 2 Predict what will happen to the angular acceleration if you keep the mass of the platform the same, and you keep the torque the same, but you create a 2m hole in the middle (increase inner radius). Then do the experiment and check your prediction. a. Why did the behavior change if the mass and the torque did not? Support your answer with appropriate calculations. Experiment 3 Predict what will happen to the moment of inertia if the torque is increased. Then do the experiment and check your prediction.
Part III. Experiment 1: Intro Torque Moment of Inertia Angular Momentum Applied Torque T = 5 Go! Clear Torques ✔Brake Torque ✔Net Torque 4.00 m 0.00 m 0.12 kg 0.00 N Controls R=Outer Radius r=Inner Radius Platform Mass Force of Brake Ruler 100 Show Velocity Vector Show Acceleration Vector ✔Show Components force in any direction Reset All Angle Units O degrees radians I I I slow Sim Speed torque (N-m) 0 -5 -10 5 Tapplied=5 N-m 11 11 1 11 a 2.5 0 +--&1 gular Acceleration (degree Moment of Inertia (kg*m -50 fast 1=1 kg*m^2 5 Go! Tbrake=0N-m 12.5 15 7.5 10 time (s) U 2.5 5 7.5 12.5 15 17.5 20 10 time (s) 50 platform=286.479 degrees/s^2 ladybug=286.4 degrees/: obeetle=-0 degrees/s^2 n 2.5 5 7.5 12.5 15 17.5 20 10 time (s) Playback Rewind Clear Step PRET T₁ 5 N-m 17.5 20 loiloi OO OTO
Experiment 2: Controls. R=Outer Radius r=Inner Radius Platform Mass Force of Brake 4.00 m 2.00 m 0.12 kg 0.00 N Ruler -300300 Show Velocity Vector Show Acceleration Vector ✔Show Components force in any direction Reset All ✓ Angle Units ● degrees radians 0-0⁰ I I Applied Torque T = 5 Go! Clear Torques Brake Torque Net Torque slow Sim Speed torque (N-m) Tapplied=5 N-m 5 N-m U 0 2.5 5 15 20 10 time (s) I=1.25kg*m^2 11 2.5 5 7.5 12.5 15 17.5 20 10 time (s) 50 platform=229.183 degrees/s^2 ladybug=229.1 degrees/ abeetle=-0 degrees/s^2 2.5 5 7.5 12.5 15 17.5 20 10 time (s) Playback Rewind Clear -10 gular Acceleration (degree Moment of Inertia (kg*m -50 0 fast Go! 7.5 Tbrake=0N-m 12.5 ▶Step 17.5
Experiment 3 Intro Torque Controls. R=Outer Radius r=Inner Radius Platform Mass Force of Brake Ruler 100 Show Velocity Vector Show Acceleration Vector ✔Show Components force in any direction Reset All 4.00 m 2.00 m 0.12 kg 0.00 N 1 Moment of Inertia Angular Momentum 10 Applied Torque T = 10 Go! Clear Torques Angle Units O degrees radians 0-0° 1 I Brake Torque Net Torque I slow Sim Speed torque (N-m) PLET 10 N-m applied 10 N-m L 2.5 5 15 17.5 20 7.5 10 time (s) I=1.25 kg*m^2 U 2.5 5 7.5 12.5 15 17.5 20 10 time (s) 50-platform=458.366 degrees/s^2 ladybug=458.3 | =458.3 degrees/s beetle=-0 degrees/s^2 2.5 5 7.5 15 17.5 20 10 time (s) Playback Rewind Clear -10 gular Acceleration (degree Moment of Inertia (kg*m 5 -50 fast 0 Go! Tbrake=0N-m 12.5 12.5 Step