The uniform garage door has a mass of 150 kg and is guided along smooth tracks at its ends. Lifting is done using the two springs, each of which is attached to the anchor bracket at A and to the counterbalance shaft at B and C. As the door is raised, the springs begin to unwind from the shaft, thereby assisting the lift. If each spring provides a torsional moment of M = (0.7u) N # m, where u is in radians, determine the angle u0 at which both the leftwound and right-wound spring should be attached so that the door is completely balanced by the springs, i.e., when the door is in the vertical position and is given a slight force upward, the springs will lift the door along the side tracks to the horizontal plane with no final angular velocity. Note: The elastic potential energy of a torsional spring is Ve = 1 2 ku2, where M = ku and in this case k = 0.7 N # m>rad.

%ECE 102 assignment 6 problem solving %Mausam Rayamajhi PROBLEM STATEMENT To find whether the velocity of at the second point increases, decreases or remains the same as the first point INPUT AND OUTPUT Input = A1 and A2 output = V2 1. Enter the Area of the first point, A1 and area of the second point, A2 2. Initialize V1 = 3 3. Calculate V2 = (A1*V1)/A2; 4. If V2 > V1, print increased 5. Else if V2 = V1, print equal 6. else V2 < V1, print decreased 7. end Test If A1 = 1 and A2 = 3 then V2 would be 1 which will give an output, decreased If A1 = 9 and A2 = 3 then V2 would be 9 which will be an output, increased If A1 = 6 and A2 = 6 the V2 would be 3 which will be an output, equa