The base of an automobile jackstand forms an equilateral triangle of side length 13 in. and is centered under the collar A. Model the structure as one with a ball and socket at each joint and determine the force in members BC, BD, and CD. The forces are positive if in tension, negative if in compression. Neglect any horizontal reaction components under the feet B, C, and D.Assume F = 780 lb, b = 13 in., h = 20 in. Current Attempt in ProgressThe base of an automobile jackstand forms an equilateral triangle of side length 13 in. and is centered under the collar A. Model thestructure as one with a ball and socket at each joint and determine the force in members BC, BD, and CD. The forces are positive if intension, negative if in compression. Neglect any horizontal reaction components under the feet B, C, and D.Assume F = 78O Ib, b = 13 in., h = 20 in.FhAnswers:BC =iIbBD =iIbCD =Ib

Given Force (F) = 780 lb Length (b) = 13 in Height (h) = 20 in

The base of an automobile jackstand forms an equilateral triangle of side length 13 in. and is centered under the collar A. Model the structure as one with a ball and socket at each joint and determine the force in members BC, BD, and CD. The forces are positive if in tension, negative if in compression. Neglect any horizontal reaction components under the feet B, C, and D. Assume F = 780 lb, b = 13 in., h = 20 in.

The base of an automobile jackstand forms an equilateral triangle of side length 13 in. and is centered under the collar A. Model the structure as one with a ball and socket at each joint and determine the force in members BC, BD, and CD. The forces are positive if in tension, negative if in compression. Neglect any horizontal reaction components under the feet B, C, and D. Assume F = 780 lb, b = 13 in., h = 20 in.