Lab Manual 2005

Part 2Purpose:To develop a mathematical model (equation) that expresses how Torque is related toForce, Lever arm distance, and the angle at which the force acts.Consider the diagram of the hand and wrench.1. Suppose the hand pushed directly towards the right. What could be said about the amount oftwisting action?2. Suppose the hand in the diagram pulled directly towards the left. What could be saidabout the amount of twisting action?3. What could be said about the amount of twisting action, if the hand were at an anglebetween 0 and 90°?4. In question 3, the force from the hand would have a vertical and horizontal component.How would you calculate these components?5. Which component is responsible for the torque?Procedure:With the “control” torque kept at the same constant as in test 1, measure the forcerequired to balance the meter stick if the string was at 60° to a 35 cm lever arm.Remember to keep the angle between the force sensor and the string at 90°.F = _______________ θ = ______________ l = _____________Analysis:1. Is changing the angle of our pulling force so that it is not perpendicular to the handleinfluential on the amount of force applied?2. Determine the components of the applied force and then calculate the torque.F x = τ =F y =- 59 -