1. Identify what's going to rotate 2. where is it going to rotate (place an X on it) 3. Identify the forces 4. Draw an Extended Free Body Diagram 5. Write a Net Torque Equation
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1. Identify what's going to rotate
2. where is it going to rotate (place an X on it)
3. Identify the forces
4. Draw an Extended Free Body Diagram
5. Write a Net Torque Equation
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- A force F is applied perpendicular to a rod at a distance l away from the axis of rotation. Which of the following is TRUE about the torque on the rod? Explain why.A. Torque is parallel to force FB. The longer the lever arm, the smaller the torque. C. When the magnitude of F is doubled, the torque is halved. D. Torque is perpendicular to the lever armQUESTION 23 Three external forces are acting on a uniform, 0.60-kg, 30-cm-long, thin rod that is rotating about an axis perpendicular to the plane of the page and through its center as shown in the diagram below. What is the 1 mL where L is the length of the rod 12 angular acceleration of the disk about the given axis? Hint: /cm.rod %3D and m is the mass of the rod. Uniform Rod +15 cm 12 cm 300 Аxis 2.5 N 4.0 N 2.0 N a. 13,3 rad/s26. A yoyo is dropped as shown in the figure below. Neglect air friction. The mass of the yoyo is 0.160 kg, R = 10 cm and Ro = 2.0 cm. a. Show and label the translational forces acting on the yo-yo's center of gravity. Show and label the force(s) exerting non- zero torque(s) about the yo-yo's center of gravity at their point of application. Only show non-zero torques. b. If the linear acceleration of the yo-yo is 2.0 m/s/s, determine the tension of the string.
- 1. A bar fixed at point C experiences three forces . The forces F1 , F2 and F3 have respective magnitudes of 23 N , 23 N and 18N . What is the net torque in Nm (including sign ). 2. The wheels , axle, and handles of a wheel-barrow weigh 117 N (W). What is the force F needed to hold the wheel-barrow in equilibrium if its loaded with 220N of dirt.1. Perform analysis steps B.1. Derive an algebraic equation for the moment of inertia of the disk/plate by using the conservation of energy method. The variables in your equations should be the values you can measure (e.g., mass of hanger, angular velocities, angular acceleration, positions and/or velocities of the falling mass, etc.) and physical constants (i.e., the acceleration due to gravity). You should do this on a separate sheet and keep a copy as you will need it during the lab.