Question

1. A young girl is unable to walk. She is weighing 85 lbr. The dimensions for her wheelchair frame are L1-40 in; L2-25 in; L3-40 in; L4-38 in, L5-10 in and X-bar 48 in. The piping material is an aluminum 6061 and has an outer and inner diameter of 2 and 1 inches respectively. (1) Calculate the total weight of the wheelchair, if accessories and wheels weights 2.5 and 2 pounds respectively. (2) Determine the stress value for the wheels when a bolt has a diameter of 0.5 inches. (3) The most critical component in the frame is the "X-bar', which is located underneath the sit, the interface between bars is one bolt with diameter of 4 inch and length of 4.5 inches, predict if the material will fail for shear stress. (15 pts) 4orh

Answer 1

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